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.
<h3 class="code-line"><a></a>Show Notes</h3>
<ul>
<li class="has-line-data"><a href="#t=00:00">00:00</a> Welcome to Syntax!</li>
<li class="has-line-data"><a href="#t=01:05">01:05</a> <a href="https://react.dev/blog/2026/09/09/react-19-3">React 19.3</a></li>
<li class="has-line-data"><a href="#t=05:30">05:30</a> Pi announces <a href="https://radius.earendil.com/docs">Radius</a></li>
<li class="has-line-data"><a href="#t=15:26">15:26</a> iPhone Duo Initial Reactions
<ul>
<li class="has-line-data"><a href="https://developer.apple.com/iphone-duo/">iPhone Duo for developers</a></li>
</ul>
</li>
<li class="has-line-data"><a href="#t=22:35">22:35</a> Developing for the iPhone Duo
<ul>
<li class="has-line-data"><a href="https://developer.mozilla.org/en-US/docs/Web/API/Viewport_segments_API/Using">Viewport Segments API</a></li>
<li class="has-line-data"><a href="https://developer.mozilla.org/en-US/docs/Web/API/Device_Posture_API">Device Posture API</a></li>
<li class="has-line-data"><a href="https://webkit.org/standards-positions/">WebKit Standards Positions</a></li>
<li class="has-line-data"><a href="https://bsky.app/profile/jensimmons.bsky.social/post/3mv46vdll5c2m">Jen Simmons’ post</a></li>
</ul>
</li>
<li class="has-line-data"><a href="#t=32:16">32:16</a> <a href="https://luma.com/5ng6bniy">Syntax Meetup in SF</a></li>
<li class="has-line-data"><a href="#t=32:52">32:52</a> <a href="https://sentry.io/syntax/">Brought to you by Sentry!</a></li>
<li class="has-line-data"><a href="#t=33:10">33:10</a> <a href="https://tailwindcss.com/blog/tailwind-is-joining-shopify">Tailwind Labs is joining Shopify</a></li>
<li class="has-line-data"><a href="#t=35:36">35:36</a> <a href="https://shopify.engineering/back-to-native">Native is the Future of Mobile at Shopify</a></li>
<li class="has-line-data"><a href="#t=40:23">40:23</a> <a href="https://herdr.dev/docs/connecting-machines/">Herdr remote agents</a></li>
<li class="has-line-data"><a href="#t=46:13">46:13</a> <a href="https://brew.sh/2026/09/13/homebrew-7.0.0">Homebrew 7 Released</a></li>
<li class="has-line-data"><a href="#t=50:55">50:55</a> <a href="https://ai.meta.com/muse/">Meta Muse AI Agent</a></li>
<li class="has-line-data"><a href="#t=01:00:19">01:00:19</a> Scott’s Switzerland Trip
<ul>
<li class="has-line-data"><a href="https://conf.zurichjs.com/">ZurichJS Conference</a></li>
</ul>
</li>
<li class="has-line-data"><a href="#t=01:07:25">01:07:25</a> <a href="https://teenage.engineering/store/ep-2350?srsltid=AU7gw4Wi-UUdi-19GFMsKbaQm4QIrE130zSpLy-hRw_N6duDuxlOjFVy">Mic FX from Teenage Engineering</a></li>
<li class="has-line-data"><a href="#t=01:10:46">01:10:46</a> <a href="https://x.com/cassiecodes/status/2097958455092904218">Three.js conference Badge</a>
<ul>
<li class="has-line-data"><a href="https://x.com/rbriaux/status/2097588315549511810">More amazing badges</a></li>
</ul>
</li>
<li class="has-line-data"><a href="#t=01:13:29">01:13:29</a> <a href="https://blog.jim-nielsen.com/2026/hands-off-my-cables/">Don’t let anyone take away your big box of cables</a></li>
<li class="has-line-data"><a href="#t=01:16:22">01:16:22</a> <a href="https://github.com/nikitabobko/AeroSpace">Aerospace Tiling Manager</a>
<ul>
<li class="has-line-data"><a href="https://github.com/stolinski/aeropeek">AeroPeek</a></li>
</ul>
</li>
<li class="has-line-data"><a href="#t=01:24:26">01:24:26</a> <a href="https://www.nomadix.co/collections/bags/products/25l-daytripper-backpack-driftwood-off-white?variant=49426904711320">Scott’s new backpack</a></li>
<li class="has-line-data"><a href="#t=01:26:52">01:26:52</a> <a href="https://opusfived.dev/">Claude, change this button to blue</a></li>
<li class="has-line-data"><a href="https://news.ycombinator.com/item?id=49623754">Hacker News post</a></li>
<li class="has-line-data"><a href="#t=01:31:23">01:31:23</a> <a href="https://knap.md/">Knap markdown template language</a>
<ul>
<li class="has-line-data"><a href="https://comark-knap.vercel.app/">Comark plugin</a></li>
</ul>
</li>
</ul>
<h3 class="code-line"><a></a>Hit us up on Socials!</h3>
Syntax: <a href="https://twitter.com/syntaxfm">X</a> <a href="https://www.instagram.com/syntax_fm/">Instagram</a> <a href="https://www.tiktok.com/@syntaxfm">Tiktok</a> <a href="https://www.linkedin.com/company/96077407/admin/feed/posts/">LinkedIn</a> <a href="https://www.threads.net/@syntax_fm">Threads</a>
Wes: <a href="https://twitter.com/wesbos">X</a> <a href="https://www.instagram.com/wesbos/">Instagram</a> <a href="https://www.tiktok.com/@wesbos">Tiktok</a> <a href="https://www.linkedin.com/in/wesbos/">LinkedIn</a> <a href="https://www.threads.net/@wesbos">Threads</a>
Scott: <a href="https://twitter.com/stolinski">X</a> <a href="https://www.instagram.com/stolinski/">Instagram</a> <a href="https://www.tiktok.com/@stolinski">Tiktok</a> <a href="https://www.linkedin.com/in/stolinski/">LinkedIn</a> <a href="https://www.threads.net/@stolinski">Threads</a>
Randy: <a href="https://twitter.com/randyrektor">X</a> <a href="https://www.instagram.com/randyrektor/">Instagram</a> <a href="https://www.youtube.com/@randyrektor">YouTube</a> <a href="https://www.threads.net/@randyrektor">Threads</a>

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