The TBC Classic phase hunter mount was added to the shop a long time ago. The Cataclysm Classic Ragnaros mount for retail servers was also added. The WOTLK Classic mount is still missing.
The Classic shop version, the Kalu’ak Whalebone Glider, is available. We are just waiting on the retail version. It’s in the game and ready to go, sadly greyed out on my in-game mount list.
I had been planning to buy it during a holiday sale when it was removed with no warning on the first day of Blizzcon in November. Had I known it would be removed, I would have purchased it sooner.
Please add the Tuskarr Shoreglider to the Retail Shop! Take my money!