Its been promised, and now, its here. In the early hours of this morning, Virgin dispatched a software update for their TiVo boxes to activate the 3rd tuner. Rejoice.
But wait - not only does this allow the TiVo to record 2 programmes while you're watching live TV/VOD content/another recording, but you can record 3 programmes simultaneously! Better yet, you can watch a recording while recording 3 programmes simultaneously! This is a significant upgrade over Virgin's V+ HD (3 tuners) and Sky's HD (2 tuners), which always use 1 tuner to display the current programme/VOD content.
The software update has also improved the calculation used to report available recording hours. Pre-update, the TiVo reported an available 325 hours of Standard-Definition recording and 99 hours of High-Definition recording. Post-update, that's changed to 477 hours of Standard-Definition recording and 121 hours of High-Definition recording.
According to this thread at the TiVo Community Forums, the update doesn't appear to have killed off any reported bugs, but another update (pre-April?) will hopefully take care of those.
V6 update being rolled out - There's a new update being rolled out to V6 boxes to address some of the bugs. If you have the update your firmware level will be 188.8.131.52.RC6-VMB-11-C68 ...