Battlefield 3 will have a demo before the game is released at the end of this year. The confirmation comes from BF3's executive producer Patrick Bach in an interview with MSXbox-World. A release date for the demo was not confirmed though. In fact, we still don't have a release date for the actual game either.
In the interview Bach also commented on the BF3's Co-Op mode which will be separate from both single-player and multiplayer. To see everything he had to say check out the whole interview here.
Will the quality of the Battlefield 3 demo affect your choice to buy the game?