I had this this morning in advance of my first Sunday with ST HD. Was checking to make sure I was going to get the games and what channels they were on. I called support and was told the guide data doesn't show up until game day. I explained to them that on my TiVo box, I actually can see the NEXT week's games guide data right behind the current game on that channel - been that way for a long time.
So I said "Thank you for your help", hung up, went to my settings, restarted the box, and everything was there upon reboot. Being a Mac user for a long time, I'm not used to having to reboot to fix problems. But if I acquire a more Windoze-like mentality, I'm sure the reboots will help.
Of course, my Giants are the only game not scheduled in HD. Is this because it's not a high enough profile game (Houston)?. Does this happen often, or should all of the games be in HD?