The DirecTV HD DVR with TiVo form would probably be a better place for this question. But briefly, there is no TiVo currently available that will receive the new DirecTV HD channels. However, TiVo and DirecTV have renewed their agreement and a new DirecTV HD DVR with TiVo is expected by the end of the year.
Here's a link to the DirecTV forum:
http://www.tivocommunity.com/tivo-vb...splay.php?f=36