I downloaded a free beta of CS6 to check it out today.
I also visited lynda.com for it's currently free videos of how to use the new features.
The tool that caught my attention was "Correcting wide-angle panoramas" about 14 videos down.
When I do panoramas now, I rarely allow "auto" and just click "cylindrical "
That keeps things from getting way out of proportion, but it does bend what should be straight lines. The adaptive wide angle filter allows those curves to be magically straightened, with an auto horizontal or vertical feature too. I won't need this too often on landscapes, but architecture is a common challenge for a photo-merge panorama.
Until a 16mm S lens or a tilt shift S is developed, this will be my work around. One does need a sense of perspective, to straighten the appropriate edges with the tools "auto-horizontal" and "auto vertical" but to watch the video is to see how amazing it is.
The attached test photo was with a 16mm M but the technique apples to any camera. Note that in the past, the curvature of the edges forced me to crop tighter than I might have wanted to. With the corrective, I don't lose as much of the image to cropping.
Now that I know how to do this, I will be willing to photograph some objects that I haven't even tried in the past. I will post those later.