Nice. A cool looking mount anyone can go for? Is that true?
If you're referring to the Flameward Hippogryph, then yes! True story, bro.
There are couple of restrictions to keep in mind, though. In order to start playing through the new daily hubs, you'll need be level 85 and already completed enough quests in Mount Hyjal to have reclaimed the Regrowth area.
and cost a lot of those new marks being introduced.
So, this is something I think deserves a little extra clarity.
The primary purpose of the new Marks of the World Tree will be unlocking new content (new quests, additional item vendors, etc). You'll be able to purchase the gear from the vendors you unlock with just gold, so they won't really come into play there.
That being said, we still want Marks of the World Tree (and, by extension, the daily quests that provide them) to feel rewarding even after you've unlocked all available content at the Regrowth and Molten Front. Though we haven't settled on anything specific, we're looking to add a few items on vendors that players can purchase with their surplus marks after they've progressed through every unlock stage.
Oh, and I know I saw someone ask this earlier, but nearly all of the quests at the Regrowth and Molten Front will award reputation for Guardians of Hyjal. The Druids of the Talon and Shadow Wardens, while pivotal to your progress in the Firelands, will not be getting their own reputations in 4.2. :)