As usual there are lots of small improvements and bugfixes. The main feature of this release is that in kernels >= 6.10, rr now works with perf_event_paranoid set to 2, which is the default for most distributions. This requires a kernel bug fix by Kyle Huey that only shipped in 6.10. rr is slightly more efficient with perf_event_paranoid set to 1, but that won't matter in practice.
rr-debugger/rr
5.9.0
on GitHub
9 days ago