I'm somewhat excited about Halo Wars.
Not because it's Halo, but because it's made by the same team (as far as I know) that mdae the Age of Empires/Mythology series. They are a VERY competent team that knows what they're doing.
So it could be a genre-defining game for the Console RTS genre.
Not only this, but RTS games on the Xbox 360 have done rather well - LOTR2BFME did fairly well, and C&C3 did as well....Making me wonder how well a Xbox 360-exclusive RTS will fare.
And I also wonder if such an RTS game, if good, will attract a better PC-style RTS crowd. I love seeing the 360 expand it's ever-diversifying library, and having alot of good RTSes is yet another genre I enjoy that the X360 now is preparing.
Back from the dead, I'm afraid.