Other games will be in HD, but not in Houston. For instance, all Met games are done in HD if on FSNY. No chance to get those.
Here's his blurb on it:
Astros in HD
-- FSN broadcast three games of the Astros-Brewers series in HDTV, kicking off an 18-game high definition package available through InDemand's INHD2 channel (channel 299 on Time Warner Cable).
Other Astros HD games: April 28-29 at Pittsburgh, April 30 and May 2-3 against the Reds, May 4-5 against the Pirates, May 16 against the Mets, June 25 at the Rangers, July 7 at San Diego, July 21 at Arizona, Aug. 20-21 against the Cubs and Aug. 23-24 against the Phillies.