There's a new major update available (BusyBox 1.22.0), incorporating almost a year's worth of upstream work by various authors. See http://busybox.net/ for the full changelog.

For those feeling adventurous, busybox-power 1.22.0power1 for Maemo 5 is available at its garage page: download. A proper release will follow after some more testing. Your help with testing is appreciated . I'm having some trouble pushing commits to vcs.maemo.org, so I simply uploaded the patch against busybox-power's master branch there as well, if you'd like to see what changed in our source.

One upstream commit broke our boot, so that had to be reverted. With this commit reverted, Busybox 1.22.0 seems to be running great on my device so far. Happy testing (and a happy 2014)!