we received leaked confirmation that the yet to be officially announced DirecTV HD tuner for Vista Media Center (VMC) was part of an upcoming update code named Fiji (expected in October). The fact that so much time has passed and our sources still haven't actually received a tuner was really starting to bother us. So we got even more concerned when we learned that the first release candidate issued to testers was missing required pieces to make the HDPC-20 possible. Unlike the previous beta releases, RC0 was missing native H.264 support which is vital to both DirecTV support and the latest Hauppauge HD PVR component capture device. Then to add insult to injury, many are now reporting that the update that will be officially called Windows Media Center TV Pack will only be available through OEMs. We're not sure if this means you'll have to download the update from Dell (for example) rather than Windows Update, but we can't see how the update could effectively be restricted to OEM installs. The testers we've talked to have reportedly been told that H.264 and DirecTV support have been pushed to Windows 7, which would mean it'll be 2010 before we see it. More about Fiji after the jump.