Bravo! I'm loving this new frontend, very cool!
I had a couple of quick suggestions after installing the new version:
1 - Expand the Link Text display area at the bottom pane of the windows. If the right hand side of the gray area isn't being used for anything, maybe expand the number of viewable characters in that area so that files with longer names are more viewable.
2 - Add a couple pixels of space between the Battery Charge icon and the Clock text, might make it more visually appealing.
3 - If not too complex, maybe add the ability to have a few windows open at the same time, with an icon on the task bar for each window.
4 - I encounter an odd visual artifact when powering-up my Wiz. After the initial "Wiz...Now Loading" screen, just before the desktop loads, for maybe a split second, the "Wiz" logo appears, but it's rotated horizontally and pixilated and replicated on the screen. Sorry if that was difficult to describe. This disappears and the Win2x front-end loads without issue, but for a second I thought I had fried my Wiz, haha.
That's all I can think of right now, but they aren't major issues, and I'm pleased to say I haven't come across a single bug yet! And that new sidebar is pretty sweet! Hands-down this is the neatest thing I've seen built for the Wiz.