>I think I read that dances (forms) in 3.0 will not be hindered by encumbrance/armor, but any word on if we can "perform" them in bodies of water?

Not exactly what you're asking, but you can right now. It just takes swimming skill, depending on the depth of the water.

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Weapons for Sale:
http://www.elanthipedia.org/wiki/User:Caraamon#Wares
Hunta Talna Kortok, built by Gor'Togs, for Gor'Togs
http://www.angelfire.com/rpg2/caraamon/home.html
Combat Balance List:
http://tinyurl.com/DRBalance