This was live already since 5.0, the patch that introduced MoP talents and stuff before the actual expac, but the gear was removed from vendors when expac launched.
However I didn't know that the Dalaran NPCs sell the old gear, thanks for sharing anyways.
Originally Posted by Gaexion
The loss of the ability to pass on loot is the loss of the ability to choose. This is communism.
Originally Posted by Aevra
It's a #$^&*@ fantasy game. You're a blue space goat riding around on flying serpents killing dragons the size of continents. And you're wondering why a gryphon doesn't look like an eagle?