15.2 software update, but zekeisaszekedoes has done such a great job in a discussion thread over at Cable Forum that I might as well direct you to there instead.
Among the nuggests of information in that thread are the TiVo keyboard shortcuts for those customers who have a wireless keyboard. I purchased one this weekend, placed the USB wireless adapter into the back of the TiVo and volia, typing keywords for content searches has become a lot easier.
But its not all good news: There's been various reports (here and here on Virgin's Help and Support Forums) of issues with BBC iPlayer since 15.2 was deployed: Catch-up EPG links not linking to the content in iPlayer, and reports of content buffering and or/playback stopping altogether when attempting to play back content. This has been raised as a National fault by Virgin and is currently under investigation. With more and more people getting TiVoed and accessing apps like iPlayer, Virgin and third-party video content suppliers may need to upgrade their networks to cope with demand.
Meanwhile, TechRadar have a great article up comparing the numerous VOD and streaming services in the UK, Virgin's VOD service is included and gets 4 out of 5.
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 184.108.40.206.RC6-VMB-11-C68 ...