Not sure if real or not (probably not because no source?) but I hope whenever we will get new information a part of it will be that it won't be as linear as I fear.
The setting is so awesome but the linearity (at least what I expect) is something I really dislike. Could be the reason for me to buy the system if it would be more open. I know they try to get a super cinematic experience but well, that's just not what I want from games in the first place.