For those wanting BT and Other high end Attune runs

All 25-player raid bosses have had their cash drops increased!

All 25- player raid bosses that drop set tokens will now drop an additional token!

Badges of Justice have been added to all raid bosses who did not previously have them!

Players will no longer require an attunement quest to enter Hyjal.

Players will no longer require an attunement quest to enter the Black Temple.

Players who have completed the attunement quests for Black Temple and Hyjal will be granted the title of ?Hand of A?dal

I found this in the patch notes. So keep watching the PTR updates to see if Blizz pushes this through annnnnnd I have heard Kara Attune being removed also

Karazhan

Players will no longer need the Master?s Key to enter Karazhan. The gates to Karazhan will still require the Master?s Key to be unlocked.

It seems Blizz are tunring Kara into Ubers, One key holder to open door rest can enter without owning a key.