18.104.22.168 is now available.
I've flogged the 22.214.171.124 kernel hard (compiling code) for the last week or so with no hiccups. So I'd say the .39 series is in real good shape.
For everything besides Dreamplugs:
sudo ./README-PLUG-UPDATE.sh 126.96.36.199 --nandkernel (installs 188.8.131.52 to nand)
sudo ./README-DREAM-UPDATE.sh 184.108.40.206 (installs 220.127.116.11 to disk)
Kernel and modules are available from the following locations:http://www.plugapps.com/mirror/with-linux/http://sheeva.with-linux.com/sheeva/
Features systemd, e-sata, dmcrypt, IPV6, CIFS, NFS4, EXT3, EXT4, JFS, XFS, FUSE(for ntfs-3g), UBIFS, usb-serial, uvcvideo, iptables, appletalk, bluetooth, v4l and ppp.