Just found this on Wowhead.
NEW GAME MODE: TIMERUNNING WITH WOW REMIX: MISTS OF PANDARIA
Like Plunderstorm, Timerunning is a new game mode. Unlike Plunderstorm, Timerunning is a PvE experience closer to actual World of Warcraft. WoW Remix: Mists of Pandaria is an accelerated replay of a World of Warcraft expansion, Mists of Pandaria.
Time is all akimbo (again) and the Bronze Flight needs your help.
Create a new character to take on this task. At the end of the event, this character will be moved to your retail WoW account.
Level from 10 to 70 at an accelerated pace.
Experience the story, the scenarios, the dungeons, and the raids all over again.
As in the original, raids will be in 10-person and 25-person Normal and Heroic difficulties.
Equip an upgradable
Cloak of Infinite Potential which will grow in power with you, giving you an excellent advantage through the
Timerunner’s Advantage buff which includes a huge experience boost.
Wield powerful bonus abilities.
Loot abounds! Get powerful items from quests, chests, creatures, and bosses. Upgrade the ones you want, convert the others to Bronze, a new currency.
Use Bronze to upgrade items and purchase cosmetics. Cosmetic items are account-wide.
Rewards include:
32 new Mounts - mostly unreleased colors of older mounts
Titles
Transmogs - both new and recolors
Pets - at least 1
Achievements - after the event, these Achievements will become Feats of Strength
Vendors provide guaranteed methods of acquiring rare Mists of Pandaria Mounts and Toys, including World Boss drops like the
Reins of the Heavenly Onyx Cloud Serpent, and farming grinds like
Reins of the Thundering Ruby Cloud Serpent.
Much like Plunderstorm, all you need to participate is a World of Warcraft subscription or Game Time. If you want to try before you buy, you can play up to level 20 on a Trial Account.
Jump on in and re-experience the Legend - it will be pandemonium!