One of the features that the Ceton InfiniTV4 was poised to offer was tuner sharing. This would allow you to have your InfiniTV4 in one HTPC and assign tuners to other HTPCs in your home. Unfortunately CableLabs put the kibosh on this rather quickly. Luckily, they've seen the light and as of Friday, tuner sharing is now approved in OCUR devices. That means you can install multiple tuners in a single PC and spread them throughout your home.
That is indeed great news.