Daelo posted a new schedule for the Ruby Sanctum dungeon test on the PTR 3.3.5.

Blizzard Quote:
Now that the 3.3.5 patch is available for PTR testing, we wanted to have a round of focus testing for Ruby Sanctum. Only normal mode will be available, with Heroic testing to occur at a later date.

Everything related to this zone is implemented for this test, please note any issues with the trash creatures and sub-bosses, loot, achievements, and quests.

US Testing Schedule:
Thursday, May 20 starting at 19:00 EDT.

We plan to allow testing for an extended period. However since this is the Test Realm, unforeseen issues could delay or cancel testing at any time.