I love gearing up doing Timewalking dungeons, they are fun, quick, and give great gear. Now we also get toys, mounts, heirlooms, and rep. Its almost to where I only need to play on Timewalking weekends.

I do not know for sure but I believe next weekend, September 4th-6th, will be the next Timewalking weekend. Last weekend was honor and weekend before was apex crystals, its about time for another Timewalking.

New Timewalking Rewards
Players now receive a Timewarped Badge when they complete a Timewalking dungeon. These badges can be redeemed at new vendors that appear during a Timewalking bonus event. The new vendors sell new toys, new mounts, heirloom and reputation tokens, in addition to gear that scales up to the character's level at the time of purchase.


Timewalking Loot Changes
Timewalking bosses who had unusual drops, such as Reins of the Blue Proto-Drake, now have a chance to drop those items when defeated while Timewalking.
http://us.battle.net/wow/en/blog/198...otes-8-31-2015