NIS has dated Criminal Girls 2 for America:
We’re excited to announce that Criminal Girls 2: Party Favors will be available on the PlayStation®Vita on September 20 in North America and September 23 in Europe!
In addition to the original gameplay mechanics in the first game, Criminal Girls: Invite Only, Criminal Girls 2: Party Favors implements a brand new skill tree that will allow you to guide the growth of the girls along either S or M path known as the Coaching System!