It probably won't happen simply because it would require Trendy only ever releasing patches at the same time on all platforms. Given the apparent length of the approval process, that means that even the PC version of the game would be reduced to one update every couple months, and no hotfix patches if things go wrong.
At best I can see xbox/PS3 cross-platform, but I don't see Microsoft or Sony letting that happen either.
Actually, the only thing we can say for sure is that it won't include Xbox 360, since MS refuses to let anything in/out of their Live network.