Sauna29 alpha firmware is out for testing
Open-minded Wippies can request Sauna29 firmware (for Homebox Black only) at Wippies IRC channel (#wippies / IRCNet). 3G dongle, Annex-M and multicast support has been improved again.
Hard to say how long this chance is out there since usually few alpha testers are enough but you can try your luck if you will.
Edit: See also the official post about the subject at Jarkko’s TechBlog. 