Jedi News also mentioned that they had to sign a non-disclosure agreement in order to check out the Hasbro offerings.
I think that's a pretty common thing for them though, in order to keep them from spoiling US Toy Fair. They've had to sign one the past few years and they usually get a token reveal or two to make up for it.
I guess I wouldn't be surprised that retailers may get to see The Force Awakens stuff the general media doesn't at Toy Fair. There are always "retail only" areas where Hasbro has potential exclusives for them to check out and show off other "not quite ready for the media" in-development things. Would make sense that Target/TRU will get to see TFA prototypes or preview figures that we won't get to see until April/Celebration or later.