Expo SDK 58

Sep 20 – Oct 20 · 66 posts · 9 web pages

28 posts on the busiest day · 19 of 31 days had none

Mostly Expo’s own voice. The top posts are Expo’s own video and announcement. Independent upgrade reports are still few, five days after the stable release.

Builds got faster, by Expo’s own numbers. A clean Android debug build dropped from about 80 to 39 seconds. An experimental Rust transformer bundles about twice as fast.

Expo changelog, Oct 15 · Expo on YouTube, 5,779 views

What Expo measured

Clean Android debug build
80 → 39 s

M3 Pro, 4 ABIs

Cold bundling, Rust transformer
≈2×

5.26 s to 2.46 s, ≈5,500 files

Faster Expo Modules 2.0 calls
2.5–5.6×

iPhone 16 Pro, release, beta

React Native version
0.88

Built for iOS 27

The release so far

  1. SDK 58 beta

    iOS 27, React Native 0.88 RC, faster native builds.

    · Expo changelog

  2. Upgrade snags reported

    A Jest version clash blocked upgrades until a fix on Oct 13.

    · expo/expo #51388

  3. SDK 58 stable

    · Expo changelog

  4. React Native 0.88 blog and Expo’s video

    “24 things to know before you upgrade.”

    · reactnative.dev · Expo on YouTube

  5. Expo livestream Q&A

    Expo asked for upgrade questions in the comments.

    · Expo on YouTube

iOS 27 forces one real migration. Apps built with the iOS 27 SDK must use the scene-based life cycle. Prebuild now generates a SceneDelegate, but a custom AppDelegate needs moving by hand.

Expo changelog · React Native 0.88 blog, Oct 19

Widgets, variable fonts and Siri got the warmest reactions. Android home screen widgets drew the top r/expo thread. A post on variable fonts drew 283 likes, and Expo’s App Intents walkthrough drew 90.

r/expo, 130 upvotes · X, Oct 19

Upgrades hit a few snags. One developer counted 18 of the 590 most-used libraries that fail to build on React Native 0.88. A bare app crashed at launch on Xcode 27, with no fix yet.

one X post, 1 like, not checked · expo/expo #51452

Expo is life saving

YouTube comment on Code with Beto’s SDK 58 video · 11 likes

Upgrade notes

React Native 0.88 says it has no user-facing breaking changes. Expo’s changelog still lists removals, such as InteractionManager and some StatusBar props.

React Native blog · Expo changelog · Oct 15–19

A new Expo Go that supports only SDK 58 is due within weeks. An SDK 57 Expo Go can’t open an SDK 58 app.

Expo changelog · Oct 15

Where people talked

X38
Reddit22
YouTube4
Hacker News1
GitHub1

66 posts and 9 web pages · Sep 20 – Oct 20

Everything this brief read: 66 posts and 9 web pages

Off-topic posts are in this list too. The brief leaves them out.

Reddit 22

  1. From my open-source Expo template to the App Store in 11 days: Maneki, an invoicing app

    r/expo · 1 upvote · Oct 13

  2. I ported sileo's gooey toasts to React Native (works in Expo Go)

    r/expo · 14 upvotes · 2 comments · Oct 14

  3. Made a UI kit that runs fully in Expo Go (no native modules)

    r/expo · 3 upvotes · Oct 18

  4. Adding a video editor to a react native app (Expo and cli)

    r/expo · 1 upvote · Oct 16

  5. I built 136 animated components for React Native + Expo (free, open source)

    r/expo · 3 upvotes · 2 comments · Oct 15

  6. We built a farming game with Expo + React Native. 10 months live, $35k revenue. What worked, what didn't (AMA)

    r/reactnative · 114 upvotes · 59 comments · Oct 10

  7. rn-build-doctor: an open-source CLI to help diagnose React Native and Expo build failures using project configuration and build/crash logs

    r/expo · 1 upvote · 2 comments · Oct 15

  8. FuelOracle - A road trip fuel planning app for Australia with Expo

    r/expo · 1 upvote · Oct 13

  9. Android app icon looks different/smaller on some devices but works correctly on others

    r/expo · 1 upvote · 3 comments · Oct 14

  10. I built react-native-fetch-client: A lightweight, zero-dependency alternative to Axios with built-in 401 Auth Mutex & SWR caching

    r/expo · Oct 16

  11. Built a production-ready React Native & Expo template for early learning apps (saved weeks of custom SVG stroke & UI setup)

    r/expo · Oct 15

  12. Here are the 24 biggest updates you get by upgrading to SDK 58

    r/expo · 32 upvotes · 3 comments · Oct 19

  13. Expo 58 Released

    r/expo · 74 upvotes · 8 comments · Oct 15

  14. Open to Remote React Native Developer Opportunities | 5+ Years Experience

    r/expo · 2 upvotes · Oct 13

  15. SDK 58 is live. Here's what's in it:

    r/expo · 114 upvotes · 14 comments · Oct 16

  16. Help: You cannot remove all production APKs and Android App Bundles - All supported device are zero

    r/expo · 1 upvote · Oct 13

  17. Tempo Tunes: one Expo codebase for iOS, Android, web and Apple Watch, and it just entered the Expo App Awards

    r/expo · Oct 13

  18. Soviet pavilion at Expo 58, (1958), Brussels, Belgium

    r/sovietaesthetics · 713 upvotes · 6 comments · Oct 10

  19. Built an offline-first year progress and countdown app with Expo SDK 57, NativeTabs, and 4 Jetpack Glance widgets (how it works under the hood)

    r/expo · 8 upvotes · 2 comments · Oct 17

  20. Expo is iPhone Duo ready!

    r/expo · 84 upvotes · 13 comments · Oct 13

  21. Giving your agent hands on your Expo app 👐

    r/expo · 21 upvotes · 2 comments · Oct 15

  22. Android home screen widgets, coming in Expo SDK 58!

    r/expo · 130 upvotes · 13 comments · Sep 30

X 38

  1. Expo SDK 58 is here. Built for iOS 27 and ready for iPhone Duo on day one. This release brings App Intents for Siri, 2× faster clean Android

    marszcode · Oct 19

  2. Here are the 24 biggest updates you get by upgrading to SDK 58 00:20 iOS 27 & iPhone Duo 01:09 Expo Device Hub 01:45 Expo UI & Jetpack Comp

    expo · 351 likes · 34 reposts · 8 replies · Oct 19

  3. react-native-executorch 0.10.6 released! React Native 0.87/0.88 and Expo SDK 58 support, correctly normalized CLIP image embeddings, and Vu

    swmansiondevs · 18 likes · 1 repost · Oct 19

  4. Plus Jules Blom's visual mental model separating React owner and parent trees, and Alan Hughes breaking down the Expo SDK 58 release. Catch

    ReactWeeklyDev · Oct 19

  5. 18 of the 590 most used React Native libraries break on RN 0.87/0.88 (Expo SDK 58): 16 on iOS ("RCTBridge.h" file not found), 2 at runtime.

    aliakyol_can · 1 like · Oct 18

  6. Expo SDK 58が公開された。iOS 27向けに作られていて、React Native 0.88を含んでいる。 iOS 27ではUIKitのシーンベースのライフサイクルが必須になるので、SDK 58のアプリはこれに合わせて正しく起動するようになっている。AppDelegat

    multilayer · Oct 17

  7. - SDK 58 release notes: https://t.co/zwrxNLYpRN - @rami__maalouf's demo app: https://t.co/3ZlJxB8XrR - The Excalidraw board: https://t.co/hB

    expo · 8 likes · Oct 19

  8. The iPhone Duo era is coming. 📱🔥 Expo SDK 58 is out! ✅ Native navigation that adapts to both screens ✅ Responsive layouts for folding &amp

    vbellet · 1 like · Oct 17

  9. @PratapMukhiya5 Expo Go and your project need the same SDK; a 57 client won't load an SDK 58 app. For Android, install the SDK 58 build from

    davekurian · 1 reply · Oct 17

  10. Expo SDK 58がでた!

    kazutoyo · 12 likes · Oct 17

  11. Variable fonts are now supported in @expo SDK 58!! Super excited to see the cool designs everyone comes up with. It's been so fun playing w

    nater02 · 283 likes · 12 reposts · 9 replies · Oct 19

  12. New in SDK 58: expo-app-intents (alpha) - it brings Siri, Shortcuts, Spotlight and Apple Intelligence to your Expo app. https://t.co/jY5pGi

    expo_devlog · 95 likes · 8 reposts · Oct 19

  13. @_philpl Thanks for the insight! It was my fault since my setup was an old combo of Win10 & Expo SDK 55. I just got a new PC, and tunnel

    CxnVI25dKV96358 · 1 like · 1 reply · Oct 19

  14. 4/ upgrading every project would take 2-3 weeks and the store would move again, sdk 58 is already in beta. plus expo go on iphone now wants

    ilyosme · 1 reply · Oct 19

  15. @UiuxYeasin @expo 😍🥰

    mehdi_made · 1 like · Oct 20

  16. @akporhiegbeking @aerlotmessenger Sounds interesting. Say more about your use of Expo. Are there widgets? Live activities? Which SDK are you

    expo · 1 like · 1 reply · Oct 19

  17. @huntie @expo 🫡🤝

    nater02 · 1 like · Oct 19

  18. @GiulioAmato @expo SO COOL

    nater02 · 1 like · 1 reply · Oct 19

  19. @MahdiSPHP @expo @PingRoomIO Sweet!!!

    nater02 · 2 likes · Oct 19

  20. @expo https://t.co/BxVn3q6rxl

    nater02 · 2 likes · Oct 19

  21. @ramonclaudio @expo YESS

    nater02 · Oct 19

  22. @byteab @expo Was thinking the same thing !

    nater02 · 1 like · Oct 19

  23. We wrote a walkthrough for 𝚎𝚡𝚙𝚘-𝚊𝚙𝚙-𝚒𝚗𝚝𝚎𝚗𝚝𝚜. It starts with a counter you can bump from Siri and ends with mail drafts that show up in Spotl

    expo · 90 likes · 9 reposts · 2 replies · Oct 19

  24. @joe_d_ryan @bot @Tesla Your Tesla email needs to match your grok email that has bot enabled

    Baconbrix · 3 likes · 1 reply · Oct 20

  25. @realMikeChong Taking too long

    Baconbrix · 5 likes · Oct 19

  26. @Alantheace13 post some pics once you add them!

    expo · Oct 20

  27. @matie_mer very soon. will ping once it's out

    expo · Oct 20

  28. @matteiomattei @UnoPlatform SO SICK 💙

    nater02 · Oct 20

  29. @poteto I firmly believe that we will have: 1. Interactive AI to design and define and prototype ideas 2. Fully autonomous agents to harden

    jamonholmgren · 3 likes · 1 reply · Oct 19

  30. @KOofTheDAY martial arts related?👀

    expo · 2 likes · 1 reply · Oct 19

  31. @cedric_dev 😂

    jamonholmgren · 2 likes · 1 reply · Oct 19

  32. @frankcalise @llamaluvr @ChainReactConf love to hear it💯

    expo · 2 likes · Oct 19

  33. @kadikraman my agents are functioning just fine 😅

    nater02 · 1 like · 1 reply · Oct 19

  34. @valigo I agree but they’re second worst…loading spinners are worse.

    jamonholmgren · 1 like · 1 reply · Oct 19

  35. @peterpme @poteto Bot not having a stop button for example is part of what makes it feel so natural to use.

    Baconbrix · 2 likes · 1 reply · Oct 17

  36. @0xmoalo passing to team

    ccheever · 1 like · Oct 13

  37. @OliEdis @expo more out of frame

    ccheever · 2 likes · 1 reply · Sep 30

  38. slowly coming around to team oklab

    ccheever · 16 likes · 1 reply · Oct 6

YouTube 4

  1. Expo SDK 58 is Out: iPhone Duo, Siri and Rust | React Native News #1

    hoanggbao · 4 views · Oct 19

  2. SDK 58 is here: 24 things to know before you upgrade

    Expo · 114 likes · 5,779 views · 16 comments · Oct 19

  3. Expo SDK 58 Beta: iOS 27, Faster builds, Android widgets and more #reactnative #appdevelopment

    Candies Ocean ◒ · 7 likes · 349 views · Sep 26

  4. Expo SDK 58: Is Your App Ready for iPhone Duo?

    Code with Beto · 267 likes · 19,966 views · 24 comments · Sep 21

Hacker News 1

  1. Windows Native Trading App

    Played · 3 points · Oct 13

GitHub 1

  1. expo/expo (53K stars) - 932 open issues

    expo · 932 comments · Oct 19

Web pages 9

  1. Expo

    expo.dev

  2. Expo

    expo.dev

  3. expo/expo

    github.com

  4. expo/expo

    github.com

  5. Expensify/App

    github.com

  6. React Native

    reactnative.dev

  7. React Native

    reactnative.dev

  8. DEV Community

    dev.to

  9. Mubbits

    mubbits.com

Left out as off-topic

  • A photo of the Soviet pavilion at the 1958 Brussels fair, also called Expo 58
  • A farming game AMA that uses Expo but is not about SDK 58
  • Replies from a former Expo engineer about other products

What this brief can’t tell you

Few teams have upgraded large apps yet, so this brief can’t say how smooth the upgrade is in practice.

Yoyo reads the last 30 days of Reddit, X, YouTube, Hacker News, GitHub and the web on one topic. Then it writes a short brief like this one and links every post it read.

Yoyo is in a small private test on iPhone. If someone sent you this link, ask them for an invite.

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