Developing for the iPhone Duo ⟡ React 19.3 Is Here ⟡ Pi announces Radius ⌁ Syntax Weekly ⌁

Scott, Wes, and CJ break down developing for the iPhone Duo with the Device Posture and Viewport Segments APIs, plus the React 19.3 release and Pi's new Radius platform. Also on deck: Tailwind joining Shopify, Shopify going back to native, Homebrew 7, Aeropeek, and Meta's Muse Agent 🔥 Be the ~19,500th person to join our super tasty newsletter https://bit.ly/syntax_snackpack 00:00:00 Intro 00:01:08 React 19.3 00:05:39 Pi announces Radius 00:15:36 iPhone Duo Initial Reactions 00:22:45 Developing for the iPhone Duo 00:32:31 Syntax Meetup in SF 00:33:41 Tailwind Labs is joining Shopify 00:35:59 Native is the Future of Mobile at Shopify 00:40:46 Herdr remote agents 00:46:34 Homebrew 7 Released 00:51:17 Meta Muse AI Agent 01:00:40 Scott's Switzerland Trip 01:07:43 Mic FX from Teenage Engineering 01:11:10 Three.js conference Badge 01:13:53 Don't let anyone take away your big box of cables 01:16:49 Aerospace Tiling Manager 01:24:50 Scott's new backpack 01:27:22 Claude, change this button to blue 01:32:00 Knap markdown template language React 19.3 | https://react.dev/blog/2026/09/09/react-19-3 Pi Announces Radius | https://radius.earendil.com/docs iPhone Duo | https://www.apple.com/newsroom/2026/09/apple-unveils-iphone-duo/ Device Posture API | https://developer.mozilla.org/en-US/docs/Web/API/Device_Posture_API Syntax Meetup in SF | http://syntax.fm/meetup Tailwind Labs is joining Shopify | https://tailwindcss.com/blog/tailwind-is-joining-shopify Native is the Future of Mobile at Shopify | https://shopify.engineering/back-to-native Herdr remote agents | https://herdr.dev/docs/connecting-machines/ Homebrew 7 | https://brew.sh/2026/09/13/homebrew-7.0.0 Meta Muse AI Agent | https://ai.meta.com/muse/ Mic FX from Teenage Engineering | https://teenage.engineering/guides/ep-2350 Three.js conference Badge | https://x.com/cassiecodes/status/2097958455092904218 Don't let anyone take away your big box of cables | https://blog.jim-nielsen.com/2026/hands-off-my-cables/ Aerospace Tiling Manager | https://github.com/stolinski/aeropeek Claude, change this button to blue | https://opusfived.dev/ Knap markdown template language | https://knap.md/ ------------------------------------------------------------------------------ Hit us up on Socials! Syntax: https://x.com/syntaxfm Scott: https://x.com/stolinski Wes: https://x.com/wesbos CJ: https://x.com/CodingGarden Randy: https://www.youtube.com/@randyrektor http://www.syntax.fm Brought to you by https://sentry.io/syntax #news #programming #webdevelopment #webdeveloper #javascript #syntax #syntaxfm #webdev