#8 - Oct. 23, 2010, 8:17 a.m.
Alrighty folks, here is what I can gather from all the information I've been told with what we have available at the moment.
Some items may drop, some may have been discontinued already.
Some quests may be obtainable, but some in that very very long chain aren't.
All will leave with the next major patch, however, much like previous discontinued quests if you have the quest already and the item AND the NPC still exists - you should be able to turn in that particular step (we think).
I know this sounds confusing and for that I do apologize. This is an extremely complicated quest chain and it's currently in flux. In short, some bits may still work, others may not. While there are known issues with Onyxia and Ragnaros drops - those usually occur because the designated looter had not checked the corpse.