If you pre-ordered BC2 before Nov 6. at either GameStop or BestBuy you will be automatically qualified to receive the Li meted addition for the same price as the standard edition, as well as a beta key. Here is a copy of what the e-mail will read.
"Battlefield Bad Company 2
Limited Edition
Good
news, soldiers! Because you had the foresight to launch a first strike by
pre-ordering BattleField: Bad Company 2, you've qualified for an automatic
upgrade to the Limited Edition, with vehicle warfare unlocks and classic
weapons.
Because we consider your pre-order a selfless act of patriotism, you are also automatically qualified to receive access to the Battlefield: Bad Company 2 Beta,
which kicks off November 19.
To redeem your Battlefield: Bad Company 2 Beta, please follow the instructions below.
1. Create a PlayStation Network account (or login
using an existing PlayStation Network account).
2. From the PlayStation Network, select the
PlayStation Store.
3. Click the "Redeem Code" icon located on the
upper right of the screen.
4. Enter the Voucher Code and follow instructions
to download.
Your unique Beta Code is ********"