<large friendly letters>Don't panic!</large friendly letters>

Seriously. 10% is being thrown around without much evidence to back it up in practice. Considering where elemental shammies usually sit on the raid damage meters, I can't see them doing any serious shammy nerfing for LB/CL and I'd bet that 10% number is overstated. I could be wrong, though. Which is one of the reasons I roll so many groups. While I'm guaranteed to be hit by most any nerf, I don't suffer from one single nerf affecting every toon I have. :P