MythTV is about to release version 0.25. That's right, it's the two bit anniversary of one of our favorite open source HTPC programs. So, what's new in this edition? A lot. In fact, for full details you'll have to hit up the changelog at the source. But, we can guarantee that the new MythTV Services API will open up a whole new frontier to devs. If you're looking for more, well, don't worry -- the creators have also added support for IPv6, AirPlay, HTTP Live Streaming, and DirectX acceleration. For more details and to download the beta for yourself, hit up the source link.
Update: One more major feature added to 0.25 is the support for CableCARD tuners. That capability was added to 0.24 through patches, but this next version supports it out of the proverbial box.