We upgrade from proprietary &quot;callback mess&quot; API to a de-facto standard socket API. There will be non-blocking sockets support, and thus portable way for async socket programming. I&#x27;d love to say that we&#x27;ll support Python asyncio, but that&#x27;s pretty high-level framework, and thus have somewhat higher memory requirements than I&#x27;d like. We keep optimizing it, but some simpler custom async scheduler may be due.<p>And for people who want to solve C1M&#x2F;100&#x2F;100 problem (&quot;Serve one million clients on a 100MHz device with 100KB of RAM&quot;, pun at <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;C10k_problem" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;C10k_problem</a>), up to going to callback-based API, we may offer that later, but it will be at least based on open and more or less known lwIP API, not on a proprietary vendor shim.