I puchased the board from Newegg last month, and I got a Rev 2.00 with barton 3200 (and fsb 400) support.
when I bought it, It was listed on newegg as Rev 2, but only listed a max fsb support of 333.
So yeah, my guess its that at this point they are all rev 2. and since according to Asus's website, all rev 2 A7N8X DLX Mobos support barton 3200 and fsb 400, you shouldnt worry much.