Martin Husemann with the NetBSD project released NetBSD 10.0 RC5 as the likely final step before declaring the v10.0 release. This fifth release candidate has a few security updates and other last minute bug fixes. For NetBSD AMD64 is also a new DRM/KMS subsystem update as one area of potential regressions.
Downloads and more details on NetBSD 10.0 RC5 via NetBSD.org .
NetBSD 10.0 has been in development since 2019 and delivers WireGuard support, many Arm hardware improvements from Apple Silicon to newer Raspberry Pi single board computers, a new Intel Ethernet driver, support for Realtek 2.5 GbE network adapters that are becoming quite common, performance improvements for multi-core systems, automatic swap encryption, and tons of other hardware support improvements for desktop/server/mobile hardware of the past several years as well as numerous performance optimizations. The 10.0 release page has more details on all the big changes of NetBSD 10.