The last time we checked in on SageTV
the HTPC frontend was just hitting version 7
last spring, but just a few days ago it upgraded to a new public beta, version 7.1.7. It's had a slew of fixes and tweaks over the last few months and GeekTonic points out some of them including Channel Logos provided by SageTV, improvements in the guide data, fixes for rewind and fast forward on extenders and many more. There's much more detail available in the changelogs on the forums, so hit the source link to find out exactly what's new and improved.