I've been following this
project for a while; I've even contributed some reverse engineering work to it. (I bought one of the devices from dabs
a while back). Note that the majority of the work has been done by Steve Kerrison and Antti Palosaari.
However, up until today I've been unable to use it as I didn't have a DVB-T2 signal. This changed on the 15th of June when Craigkelly's
digital switchover was completed. Unfortunately the driver
isn't available in mainline linux yet, so I've just forward-ported it to 2.6.39. The temp patch is available here
It seems to work fine; I'm using (an unmodified!) tvheadend
as a headend, and XBMC as a network client. Its a pity the actual content is still as poor :)