I'm hoping Trinity brings cost down for AMD notebooks, because I don't see any reason to believe that it will bring meaningfully better performance or power consumption than Llano. Llano brought K10.5 down from 45nm to 32nm. Desktop Bulldozer is already based on 32nm and has similar power consumption as K10.5. I'm a big AMD fan, but it requires a large leap in logic to believe that another stepping is going to make enough of a difference to matter.
Then again Arrandale and Pine View had extremely little gains over their predecessors, and Intel didn't really suffer.