From an anonymous Phoronix reader I received the following message:
MythTV has been forked by one of its primary developers, Mark Kendall. Mark is responsible for many of the popular features of the past few years including VAAPI support, VDPAU support, VDA support, major player improvements, Airplay Support, AirVideo support, and countless others.
Mark is working on his new branch, called "Torc," and has already begun to rip out years worth of unmaintainable and legacy code. Mark appears to be intending to remove the code that prevents MythTV from becoming a fully modern project, and his talents and contributions to the MythTV project suggest that he has a good chance of succeeding.
Those interested in trying out the Torc fork of MythTV can find the source on GitHub. Meanwhile, the upstream MythTV is still working towards their long-baked v0.25 release.