That's right, testing on 11/11/11!

Friday, November 11
10:30 PST Zon'ozz 25 Heroic
14:00 PST Hagara 25 Heroic
15:30 PST Warmaster Blackhorn 25 Heroic
17:00 PST Spine of Deathwing 25 Heroic

The testing schedule is very fluid, in fact some might say it's downright slippery. The schedule can change at a moment's notice due to various factors including build and server issues.