Yeah I seen that, but as Kev stated, the HDNET broadcast will be blacked out and we'll all get stuck watching it on MSG-SD. Trust me, I tried to cover all my bases for the Rangers like I do every year. Center Ice, MSG etc....
As someone else stated, when I was doing research into providers I was told by a CSR that MSG-HD would be coming to Dtv, so I switched last month from cable to Sat and now this. To be honest I kinda feel like I was duped/tricked into switching. I think someone from Dtv should have to speak up and let me know what THE REAL DEAL IS..Kind of shadey and a lame business practice to fall into..... Just my .02
You're not alone. Satco's have been duping/tricking potential customers for years now. It's the only way to get new customers that are in your situation.
D* has listed MSG-HD saying the RAngers are available in HD for about a year now on their web site. So I would recommend printing out that page on their web site and taking it to an attorney. I'm sure they have some loophole to get away with it. Just like the Dolans of Cablevision keep all NY/NJ fans from getting HD using their precious terrestrial loophole.
So you probably wont get much out of it except wasting your time and money but who knows, maybe you'll get some lawyer to open a class action suit that can finally put a stop to all this nonsense and you'll be a hero for generations to come.

I'm pretty sure the sat and cable co's are pretty busy suing each other all the time though and that never leads to anything positive.
I'm a E* NHLCI customer but I've been waiting till the free preview is over to see if the rumors of D* getting MSGHD and FSNY HD were true before commiting to one or the other, since I'm an out of market devils fan. Every year I hear rumors of this and every year I'm dissapointed.
So I stay with E* cuz at least they have 2 or 3 feeds of each game on their NHLCI instead of having to watch the feed D* chooses for me. And since D* lied about the HD channels once again, I guess I'll just stay put at E* for at least another year. E* has 4 games on their NHLCI HD schedule tonight and I saw 2 or 3 tomorrow night, but they still don't have MSG HD or FSNY HD either, so that rules out about 150 HD games this year alone between the rangers, devils, islanders, sabres, not to mention the flyers on CSN, another HD network neither has.