So far, I'm liking it.

I just checked some of my scene files, and they've apparently fixed my recurring issue with the Cloth Room that caused some of my cloth sims to literally explode.  Now I won't have to run the simulations in P6 first.

I had another problem with materials (particularly on Victoria 4), where they'd initially load completely black, requiring me to reload the textures.  SR1.1 seems to have fixed this, also.

Haven't noticed any new problems yet.