S!
Sounds are better, especially for Bf109E
Bf109E-4 is SWEET! Land colors and overall feel mucho better as the shore lines. Shadows flicker still and the AMD users will notice the "3 lines" in horizon, but VERY faintly.
Most performance hit for me are the shadows and trees. Especially trees cause stuttering at low altitude flying. Up high no problemo. The beta is a leap towards CoD being what it should have been so remaining hopeful for the future patches
In short, an improvement in a positive way while some issues remain.