NHL 14 is probably the least reliable reference point for uniform changes, aside from the sweaters.
It seems to me like they put very little effort into the latest version - all they really did was update fighting and a few checking animations. The retro update is a joke - they just updated the ice to be light blue, changed the speed/shot power and added a few vintage sound effects.
The legends team and all-star rosters are the biggest joke of all. Half of the "legends" are still in the nhl today, and the only legit legends they included were Gretzky, Lemieux and Roenick. The all-star teams include some very questionable players. I was hoping they'd clean that up this season. It's pretty sad update for a game with so much history, but I guess its a drop in the bucket compared to Madden in the US, so their focus remains on that game. And perhaps they're waiting to make a these updates for NHL15 on XBox One or PS4, and didn't care much for the final version on the existing platforms.