A closed beta is being carried out for this. Unfortunately its only for 360 only, not the PS3, but those of us with both might like to try and report back, as (hopefully) there wont be any differences (at least of a negative nature anyway ) . Voice comms are to be used to control certain aspects of the game and will it be interesting to see how this is implemented to see if it makes console based RTS's more accessible. There are some thoughts that the PS Eye may have some functionality too. You'll need 3 gb space on your HDD and an active gold account too.
Thanks to Jonnydynamite on the 360 forums for the link.
EDIT: I have just completed the process and they will "get back to me" to let me know if I have been successful in getting ion the beta.
This is the first of my "So has anyone heard about this" and "Is it any good" posts this morning... i cant find a decent review of this on the PS3, which surprises me as its out very soon. I know the demo is ourt for the XBOX, but Sometimes the two systems are not really comparable (framerate etc), so wondered if there was any ps3 news? Thanks