Neowin has three screen shots of Windows Vista Build 5231. According to the Web site, this update (which is not Beta 2, but an interim release on the road to Beta 2) will be released to official beta testers next week.
The changes in the Audio Devices and Sound Themes Control Panel application are interesting, as is the preview of Windows Media Player 11.
If history is any guide, Neowin may shortly be asked to pull these screens from their site, so go look now.
To be honest, there is nothing to ooooo or ahhhhhhhh about, WMP 11 looks clean and nice and integrated with Vista ui and from the looks of things, the new sound panel needs work.