THANK YOU so much for edge, face selection and FINALLY, back-face culling!!!!
Mildly Unstable - Using Win XP sp2, this build, I was playing around with a bunch of the new features (about 21000 faces, 9.5M file created on with v2.3 I think), then tried to do something like turn off solid view and turn sub-surf off or on, not sure. But poof - Blender vanished. Haven't been able to repeat it, sorry.
About the edit selection type control keys:
It seems kind of redundant to have Control-tab pop up a menu, when "mouseable" options are on the icon bar thingie already.
Having said that, I sometimes like both the cycle between edit modes AND a pop-up menu. (Though I hate how Spacebar now changes the menu's sort order depending on where it pops up on the screen. ARG!

) But if there's a menu, should have a "Limit selection to visible" check option on there too, eh? Maybe the 3 modes should be on a pop-up instead of spread out like they are now. Then they would fit over by the MODE pop-up and the rest of the items more readily instead of stuck way off to the side. Hint hint..
Er... but why is the back-face culling limited to solid mode? I'd love it in wireframe and OBJECT selection mode as well. Its a pain trying to pick out a simple object to edit while in a solid views, when there's a complex object underneath it - the complex object is the one that usually gets grabbed. I have to flip in back & forth between wire & solid view to find the edges to the object I'm staring at, sitting right on top.
Just grumbling, but I keep forgetting that F7 has been renamed to "object" panel rather than "animation" - I STILL can never remember where the object's layer buttons are.