Latest news regarding Battlefield 3 confirmed three different weapons although there have been a tons of talk and rumors about the weapons that will be available in the game. Although some people from community claim that they know the actual weapon list, other strongly believe that the rumored weapons belong to the common ones. People from BF3Nation did research and have compiled the list of the confirmed weapons so far (again, only three), and an expansive list of all possible rumored weapons that fit the time line.
Confirmed Battlefield 3 Weapons:
M4A1 or HK 416