2015 GM Trucks will get 8 speed Transmission

I just bought a new Yukon and have read where there will be a 2015 1/2 model with 8spd. I bought a Denali so that I could get the 6.2 just so it had the power to not be shifting constantly. I have a work truck with 6.0 gas and it wears on you how much it's always shifting. Will be interesting to see what the 8spd does.