DICE has confirmed it's to re-open servers for Caspian Border for the PC version of the Battlefield 3 beta for this weekend ahead of the trial closing this weekend. The re-opening is so that, according to BF's US community manager, DICE can be "stress testing our servers." The 64-player map, which also has jets and vehicles - the whole shebang, previously opened up last week as part of a short trial on it. Caspian reopens later today.
BF3 releases on October 28 in Europe for PS3, 360 and PC.