2.6.39.3 is now available.
I've flogged the 2.6.39.2 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 2.6.39.3 --nandkernel (installs 2.6.39.3 to nand)
For Dreamplugs:
sudo ./README-DREAM-UPDATE.sh 2.6.39.3 (installs 2.6.39.3 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.