User blog comment:Bovell/Lots of new Battlefield 3 details via Twitter, DreamHack festival, PSM3, and interview/@comment-28584497-20110624022614

So I'm guessing they decided to use the MoH 2010 form of weapon customization (as opposed to the more CoD-esque spec system).

Maybe HP was right when he said all the FB games were "betas" for BF3.