Physical Warfare Pack
What it is: A set of three time-based exclusive items and one early weapon unlock for Battlefield 3.
Where to get: By pre-ordering Battlefield 3: Limited Edition on Origin (digital download PC only) or at select retailers all over the world.
Available: Day 1 if you pre-order. You will get access to this content at no extra charge at a later date if you don't pre-order (date to be announced)
Cost: At no extra charge with your pre-order at Origin and select retailers.
Anscheinend kann man die Items des Physical Warfare Pack später doch noch freischalten. Die Vorbesteller haben es von Anfang an, ansonsten hat man dadurch auch nichts gewonnen.

http://blogs.battlefield.ea.com/batt...3-players.aspx