Looks like Rust 1.85 made it in[1]. So that's good news for packages that keep their MSRV at 1.63 only for compatibility with Debian stable releases.
[1]: https://www.debian.org/releases/trixie/release-notes/whats-n...
is who command still broken because of systemd?
For me the most important new things on Debian Trixie are the Linux kernel supports.
First is the use of 6.12 where the kernel now starts to have real-time capability that was more than 20 years in the making "so now you can run your space laser or audio production without specialty patches" [1].
Second is the official support for RISC-V64 on Debian Trixie [2].
[1] Real-time Linux is officially part of the kernel (138 comments):
https://news.ycombinator.com/item?id=41594862
[2] What's new in Debian 13:
https://www.debian.org/releases/trixie/release-notes/whats-n...