- Support for various new file descriptor kinds on Unix and specifically Linux, such as `socketpair`, `pipe`, and `eventfd` (by @DebugSteven, @tiif, @RalfJung, @FrankReh).
- Support for Linux `epoll` (by @tiif with some groundwork and extensions by @DebugSteven, @FrankReh, @RalfJung).
- Broaden the general file API support (by @Pointerbender, @Jefffrey, @tiif, @newpavlov).
-- Support for many Intel vendor intrinsics covering SSE2 all the way up to AVX2 (mostly by @eduardosm with some help by @TDecking and @Kixunil).
+- Support for many Intel vendor intrinsics covering SSE2 all the way up to AVX2 (mostly by @eduardosm with some help by @TDecking, @Kixunil). Thanks to @folkertdev, Miri even supports some AVX-512 intrinsics, making it a suitable [testbed](https://trifectatech.org/blog/emulating-avx-512-intrinsics-in-miri/) for code you may not be able to run on real hardware!
- Support for basic functionality on FreeBSD (by @devnexen and @LorrensP-2158466).
- Support for basic functionality on Illumos and Solaris (by @devnexen).
- Support for basic functionality on Android (by @YohDeadfall).