More MP - what about DR?

Regarding the upcoming 36MP sensor for the D800 and A99, should we expect to see any significant increase in DR? I noticed DXO scored the A77 at 13.2 and the A900 at 12.3 ev. Basically, with increased MP - that's fundamental, but any thoughts on if we might see any significant increase, and if so, how much, in the DR of the new 36MP full frame sensor?

Thanks for any thoughts on this subject...