Opera 10 gets a facelift in new snapshot build
One minor gripe I have with the redesign is the slightly off-center main navigation bar. It's subtle, but the few extra pixels below the buttons look more like an oversight than a design decision.
Hide the main menu, and Opera 10's interface looks a lot like Chrome and Safari. Beauty is, of course, in the eye of the beholder, so whether or not the new skin helps Opera's popularity remains to be seen. The browser itself shows a lot of promise, and is worth playing with if you haven't done so already.