Check this out from neogaf:
A third party game with development funded totally by SCE.
If the rumour is legit, he also mentions WKS will come out on Jan 31 for 8990 yen.
It's concerning a rumor listed in the latest Famitsu.
The obvious 3rd party choice would be SE, and this could add credibility to the other rumors posted earlier. Could it be the long rumored FFVII remake, funded wholly by SCE, exclusive to PS3?