I will be so happy Canon will release some high MP bodies so people can stop talking about the resolution of the D800 so much...
Not sure how interested I will be, it highly depends on the low light ability (high ISO). I would take sub-30 over 50+ MP any day, IF that meant cleaner high ISO. So we will see how Canon does with it!
I am guessing if they do release two bodies, one will be a replacement for the current 5D3 with lower MP, higher FPS, etc... With another 5D model for studio/landscape... 50+ MP, Low FPS, no AA filter due to the 50+ MP, etc..
Just my guess!
And about the 11-24, I really would love it but the price will be hard to swallow at anything around $3K. It needs to be priced no higher than $2500ish, dropping to $2K or less after a few months... Especially for f/4. Yeah I know it can do 11mm, but still.