Found this in last week issue of Weekly Famitsu Taiwan. Arc System Works’ 2D fighting game Guilty Gear XX Accent Core Plus (or Guilty Gear XX Λ Core Plus) appears to be coming to the PSP this July, four months after the PS2 version was out in Japan.
Guilty Gear XX Accent Core was ported to the PS2 last year from the arcades version and Plus, released last month in Japan, add a couple of characters, new story and new modes. According to the Famitsu report, the PSP version will has an all new mode called “Team Battle” which lets players form a team of 3 members to fight in a tournament. There will be supports for communication play via the ad hoc mode as well.
There is no official words on this from Arc System Works but there is a small mentioning of the PSP game in their latest announcement on the PS2 version’s hidden elements.