A couple of Mass Effect 3 news with the Xbox 360 version of the multiplayer demo having a special "Gold"-access promotion for Silver/Free users starting on February 14 and lasting till March 6. PS3 and PC users will get the demo on the same date.
The single player demo will not carry any saves nor custom Shepard from previous ME games and was leaked to be a side quest style mission that doesn't really affect the ME 3 storyline or previous series saves.
Finally, EA will be revealing details on the mobile and handheld version of this game in the near future but its assumed to only be an app or extension pack to help manage items like what was done with Mass Effect 2 on mobile devices.
http://www.egmnow.com/articles/news/...s-coming-soon/
http://www.giantbomb.com/news/mass-e...d-access/3960/