[pjmlp]

Kind of,

https://www.sitecore.com/landing/uk/2023/the-future-is-compo...

Most of the new acquisitions are based on Java, with exception of Order Cloud and Content Hub.

.NET Core is available for XP headless rendering SDK, however it is NextJS/JSS that are getting the spotlight and there is plenty of DIY if you will go down .NET Core, specially after the cooperation agreement with Vercel.

Classical XP is stuck on .NET Framework and XM Cloud customisation points favours WebHooks instead of writing .NET code.

CDP, Search, Send are low code tooling, only exposing Web APIs, and JavaScript.

Content Hub does allow for some use of C# in scripting, but it is mostly about Webhooks as well.