While some of us have been enjoying the MLB postseason in HD on TBS HD, those relying on Cox Communications have been out of luck. Thankfully, all that is changing, as Cox and Turner Networks "announced an agreement today that will allow Cox to offer TBS in HD and CNN HD in Cox markets." Interestingly, an actual go-live date wasn't noted, so for those out there paying for HD from Cox, fire up your set and see if either channel is already available.