Pasi Lehtimäki

Software architect and developer | Focused on Frontend | Co-founder of @OrientoInfo | Orienteering

[Expo @expo]

Expo SDK 56 is out 🙌

◆ Expo UI is stable on iOS and Android
◆ iOS builds 16% faster, plus another 20% on EAS from precompiled community libs
◆ Android cold starts 40% faster
◆ Expo Router decoupled from React Navigation
◆ Inline native modules: write Swift and Kotlin right next to your TypeScript
◆ Hermes v1 by default
◆ Bytecode diffing on by default (~58% smaller OTA updates)
◆ iOS Widgets stable
◆ React Native 0.85 + React 19.2

It's been two months since SDK 55, and we packed in everything we could fit. Your iOS build times are going to thank you. Full changelog ↓

[Software Mansion @swmansion]

Thanks to RN Worklets 0.8, Bundle Mode just got a lot more interesting! 🧵👀

✦ Stream markdown in a background worklet thread
✦ Network requests from multiple threads at once
✦ Way simpler setup – no feature flag, no lengthy recompilation
✦ Detailed installation instructions for @expo apps

See what people built with it, and how to get started ⬇️

[Expo @expo]

Expo SDK 55 is here😅

React Native 0.83. React 19.2. Legacy Architecture dropped. New Architecture is the default.

◆ 75% smaller update downloads with Hermes bytecode diffing
◆ Expo Router v7 🤯
◆ Brownfield isolation via expo-brownfield
◆ AI tooling: MCP + agent skills for Claude Code
◆ Expo UI much improved for both Swift and Jetpack Compose

There is so much more...it feels futile to try and isolate a few bullets...check out the full release notes and let us know what you think ↓

[Google @Google]

Introducing Gemini 3 — our most intelligent model that helps you bring any idea to life.

Gemini 3 is our next step on the path toward AGI and has:
🧠 State-of-the-art reasoning
🖼️ Deep multimodal understanding
💻 Powerful vibe coding so you can go from prompt to app in one shot
🤝 Improved agentic capabilities, so it can get things done on your behalf, at your direction

We're making Gemini 3 Pro available across @GeminiApp, Search (starting with AI Mode), and our developer products, so you can use its incredible reasoning powers in your daily life — to learn, build and plan anything.

[Jiahan Chen @jiahan_c]

Rspack has tons of complex tests. We just migrated from Jest to Rstest and saw about a 30% speed boost. ⚡️

If you’ve been thinking about trying Rstest, now might be a good time to give it a shot.

[Evan Bacon 🥓 @Baconbrix]

Build, Launch, Repeat 🚀

Watch my new @reactjs conf talk today!

✦ 0:00 - @Expo 54
✦ 1:22 - Launch
✦ 4:44 - AI app / live demo
✦ 10:49 - CSS in Expo

[@PolarGlobal @PolarGlobal]

The new POLAR Loop is here! Silent tracking wrapped in a beautiful design. No disruptions. Just the data you need to boost your well-being – discreetly and accurately. Simple as that. ♾️

👉 https://t.co/5OWX5ApLZB

[Oriento Solutions @OrientoInfo]

Suunnistusliiton Irma-pohjaisen rastilipun kanssa yhteensopivat EResults Lite ja Mobile (Android) on nyt julkaistu. https://t.co/jutBPuiGDm #suunnistus #tulospalvelu #eresults

[Jarred Sumner @jarredsumner]

In the next version of Bun

Bun.serve() gets builtin support for hot reloading frontend applications.

[Adam Wathan @adamwathan]

✨ Tailwind CSS v4.0 is here!

Huge performance improvements, radically simplified setup experience, CSS-first configuration, modernized P3 color palette, container queries, 3D transforms, expanded gradient APIs, @​starting-style support…

…and tons, tons more.

[Bun @bunjavascript]

Bun v1.2 is here

https://t.co/m3Q4xJ7l88

[React Native @reactnative]

The New Architecture is here!

React Native 0.76 enables the New Architecture by default:

https://t.co/JhOWla2NWy

[@PolarGlobal @PolarGlobal]

Introducing the NEW ✨ Polar Vantage M3 ✨ 

This is a smart multi-sport watch for multi-sport athletes combining the rugged form of our outdoor series – with the functional performance of our high-end sports range.

#PolarVantageM3

1/6

[Evan Bacon 🥓 @Baconbrix]

⚡️ What if you could incrementally adopt native views in React websites instead of starting from scratch?

🚀 Expo DOM Components make this possible!

Watch: Migrating a @shadcn template to @Expo Router ↓

[Bun @bunjavascript]

Bun v1.1
- Windows
- Cross-runtime IPC between Node <> Bun
- if else [[cond]] statements in Bun Shell
- Improved Next.js support
- Fixed crash in Bun.Transpiler

Thanks to 364 contributors since Bun 1.0!
https://t.co/mjFHWbznbO

[@PolarGlobal @PolarGlobal]

The ALL-NEW, Polar Grit X2 Pro is here - and it may just be the most badass watch we’ve ever made 💪 ⁣
⁣⁣
1/5 🧵

[Devon Govett @devongovett]

Just released our React Aria Components + Tailwind CSS starter kit! 🥳

💄 Beautifully styled implementations of every component that you can modify.
🌗 Light, dark, and high contrast modes.
🎲 Multiple variants.
🛝 Pre-configured Storybook.

https://t.co/YNB6OU3jJP

[Devon Govett @devongovett]

Announcing React Aria Components v1.0.0! 🥳

Over 40 components with built-in behavior, adaptive interactions, top-tier accessibility, and internationalization out of the box, ready for your styles.

https://t.co/kjLb5Lk4If

[Vite ⚡ @vite_js]

⚡️ Vite 5 is out!

Performance improvements, big cleanups, and new features preparing the ground for even more innovation from the ecosystem!
https://t.co/54Z2pLLtyv

[Jarred Sumner @jarredsumner]

Bun 1.0 is compiling

https://t.co/sxAKXDzrOd