Flame Leviathan has been tested more last night, you can read the detailed reports on World of Raids and MMO Champion.
The only changes seem to be the boss HPs, and some new mini-bosses to guard two of the towers. No new Holy Paladin loot to add on the Ulduar loot list.
A lot of blue messages yesterday on the forums too. About a lot of different topics, most notably more arena/pvp/pve discussion.
From my point of view, the vague ideas launched in the air, on some topic such as the state of healing in the game, show that they really have no long term idea of what they are going to do with the game ... not very encouraging if you want my word.