It has been a few months since the great city of Columbus, Ohio received any new HD channels courtesy of Time Warner Cable, but residents can once again celebrate now that the carrier has added three more. Discovery HD (762), History HD (767) and Palladia HD (774) -- which is described as a music-centric station from MTV Networks -- have just appeared in the EPG. Word on the street has it that the latter will be replacing MHD in name only, so don't be too shocked if it pops up in your neck of the woods as well. [Disclosure: Engadget is part of the Time Warner family]

[Thanks, Jason]