As an alternative to waiting for U.S. Releases or buying directly from Art of War, there is a japanese toy/hobby/model site that caters specifically to international (U.S.) customers. They get the AoW releases in a pretty timely manner and allow pre-ordering on new releases once they are permitted. At any rate, aside from Berserk you can find absolutely magnificent amounts of goodies there. it is a fun place to browse around for a few hours. They only have a couple Berserk items in Stock right now...
Hobby Link Japan:
http://www.hlj.com/scripts/hljlist.cgi?Maker1=AOW&Category=Fi&Dis=2
Hobby Link Japan:
http://www.hlj.com/scripts/hljlist.cgi?Maker1=AOW&Category=Fi&Dis=2