What the exciting news was, is that flying mounts are now available for level 60's. They flying training was 600g and the mount was about 50g.
So where to buy mounts and skills? Well if your 60, i would say you've made your way over into TBC already.
Alliance can purchase the epic ground mount riding skill from the Honor Hold trainer, as well as the flying skills and mount. I thought i would have to hotfoot it back to Elwynn forrest for the riding skills but with the player base now not even wanting to spend 10g on repairs let alone 10 minutes to travel, Blizz have made picking up the riding stuff more convenient.