Some foreign sites have received review copies so the game is final now.
http://www.ps3fanboy.com/2008/01/04/devil-may-cry-gets-sixaxis-support-achievements/
Bad/Good news is that the 5Gb install is mandatory on ps3. (weirdly enough no-one has timed the install as surely that will be a bone of contention for some!!).
Good in the sense that out of the box (assuming graphics are the same), you will get a better experience on the ps3 (again, assuming rumours of no load times on ps3 with 5gb install are tue).
Bad in the sense 5GB is a lot for a single game. (I have 22Gb out of 55Gb free so don;t really care).
Sixaxis support sounds a bit tacked on, and this achievement thing doesn't do it for me anymore anyway.
There would have to be some major difference in the 360 version to convince me to gte that over the ps3 version in light of the above I think. Now it is just a case of
1) Import and save money and have a few days after release.
2) Pay a bit more in UK and have game early, but have loads of other games to play so won't play straight away anyway!!
rp2000