Yup, looks like in the initial agreement they couldn't even talk about the other versions of the game before the Xbox release.
SE wanted to talk PS4/PC versions, after the lackluster reception/pre orders of ROTR, to try and at least build some anticipation for the other versions, hence renegotiation, and delaying the PS4 version was the cost. My guy said SE didn't mind this as the delay meant it avoided UC4's release.
I'm sure they did. Except it wasn't agreed to.They should add a clause where if the title didn't sell well on X1, then they can move forward the release date for PS4 and PC version. Probably next time....
What I'm guessing is that Square-Enix will probably try to refresh the game a little bit by then, in order to call the attention of the press.
They can show substantially better graphics by taking advantage of the PS4's higher performance and/or maybe even *gasp* supporting PlaystationVR, include whatever paid DLCs they release in the meantime and then just call it "Rise of the Tomb Raider: Definitive Edition".
What a bad deal this would end up turning out to be for MS if it goes down like that. Give a large financial incentive for timed exclusivity only for the other platform to have the better version in the end.