Virgin Media is piloting a small new code release for TiVo in a small number of areas at the moment.
In addition to a number of fixes after this software release a number of unsupported Apps will cease to work as these Apps create stability risks to the TiVo platform.
Virgin says "We know you're interested in using this sort of companion app so we're hard a work adding adding new features to our forthcoming TiVo Buddy app which we'll be launching later this year."
Jason has a longer post on this if you want to know more.
UPDATED: the "Apps" referred to aren't on the TiVo but to control the TiVo from smart phones or tablets.