It's unfortunate that this bit of news is circulating with so little information included, but word has it that Track7 has "cancelled" their multi-platform game Theseis. The culprit? High development costs: "If Sony were to offer us assistance in producing a PS3 version we would be more than happy to oblige!" This coming from inside the company.
Heading to Xbox 360 and PC, this title was also popularized as a PlayStation 3 game. However, they were quick to nip this in the bud with an announcement on their website: "Track7Games would like to clarify that we never cancelled something that did not exist in the first place. We plan to develop "Theseis" for PC and Xbox360 in the near future. As for the PS3, we simply made a strategic decision to not move ahead because we deemed it not probable at this time."
So there you have it: Theseis was not "cancelled" so much as it was just dropped in the interests of business. Either way, Sony fans are still holding out for some dedicated third-party support.