The End of Pandaria Cometh 9.10.13

Is Garrosh possessed? Or just power hungry?

There will be a smaller pre-expansion event patch, but anything beyond that is not set in stone. Patch 5.4 is the conclusion of the Pandaria storyline. 

AskMrRobot has a concise write-up about changes, including currency, gearing, etc. 

"Players who want to stockpile their 3,000 Valor before Patch 5.4 hits will be able to do that, and probably should start thinking about that."

Blizzard posted some great info about:

• Flexible Raiding - 10 to possibly 30 player raids?

  The tech is in place to be able to change how flex encounters work for each additional player that is in the raid. Some things like NPC health or damage scale well and can easily be changed per player, but generally things that don't scale well like the number of adds just change for every few people that are added to the raid.

• Connected Realms (post 5.4) - start with a few, then pool realms together to get a good population. Like PVP, you could see 2 people with same name!
• Class changes - I've put in my two cents.

Casting while moving is a complex problem, as the game works better when there is less casting while moving, but being inactive when movement is required is a problem as well. Allowing players to do lower damage while moving is a decent solution to the problem.

MMO-Champion posted a summary from the Developer interviews. This is a really good list of some major changes to the game. Sound bites, but interesting.