New screens hosted over on
andriasang.com and info in this
article
There is also a new PV that popped up on youtube and other video hosting sites. You can find some more info on
segabits.com including the PV showed at the PSP2i tournament.
Official HP is (still)
http://pso2.jp
You can also find the required PC specs for the alpha test, i doubt it will changed for he retail version.