Update (10/11/2016): This Edition of Rise of the Tomb Raider is not a version released at retail but one for the gaming press. Not sure about the validity of this only being for the press or now, so will be editing title of this post to ‘Rise of the Tomb Raider – Retro Edition’ and leave it at that until more information releases.
This special edition has the title Rise of the Tomb Raider put in a PS1 Disk Casing to give that ‘retro’ feel of the original Tomb Raiders.
Thank you @HollieB for discovering this on Twitter.