I'm not sure but it seems that Blizzard included some flooded maps in 3.2 ulduar files. I'm not sure if they're related, but anyways they're worth posting imo.
These maps can be found from World of Warcraft\Data folder in Lichking.MPQ. Treepath is World\Expansion02\Doodads\Ulduar\
This is UL_Planet05.blp
and this is UL_Worldmap_01.blp
EDIT: Added a Youtube video
[YT] <object width="640" height="505"><param name="movie" value="http://www.youtube.com/v/0KuyQFyaamg&hl=en&fs=1&rel=0&hd=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/0KuyQFyaamg&hl=en&fs=1&rel=0&hd=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="505"></embed></object>[/YT]
I wonder whats that thing in top of the map...
Remeber these are everything but sure!