Well, I've read this via a Torchwood mailing list:
"I've got Comcast in the Philly area and, as of this afternoon, BBCA is in HD. The bummer is that there is now no non-HD BBCA channel so I can't get BBCA on the regular digital cable box upstairs."
BBC's press office put out some programming info for Week 27, which apparently equates to July 4-10. It includes Torchwood.
BBC - Press Office - Network TV Programme Information BBC Week 27 Unplaced
Which means BBC will be airing Children of Earth two weeks before BBC America. :rolleyes:
But...