From the Release page:

• memdraw and devdraw now support affine warp primitive with demonstration programs provided in form of games/rotzoomer and see also image(1).

• new atomic(2) functions provided for arm, arm64, mips, 386 and amd64.

• big stabilization improvements for kernel when it runs out of memory as well as complete overhaul of the mount and image cache.

• irtio10 i/o bar support for openbsd vmd.

• libc got rune normalization updated to unicode v17.

• libsec now has blake2 implementation.

• git got a new rebase utility.

• troff got ported to native plan9 from ape.