Build 5728 has been released to participants of the Customer Preview Program. It looks as though there were a myriad of minor changes meant to polish the product:

This build (5728) has a number of improvements and updates from RC1, but has not been put through the same internal testing process as RC1 and therefore may be unstable in certain installations. We are making this release available for a limited time only (and only by download) in order to get broad distribution and testing in a variety of PC configurations. Please note: This build may not have the same level of support or servicing via Windows Update, and you may not be able to upgrade to the final version of Windows Vista. To continue, please use the links below to start the download. Otherwise, please click here to access the download for Windows Vista RC1 (build 5600).

Installation notice: Users of Toshiba models M400, M4, and M5 should choose to do a clean install (not upgrade) of this build.

Once you complete the download you must burn the ISO file to a DVD. If you don't know if your DVD-burning software will support burning an ISO file, please refer to your DVD-burning software program and search Help for instructions on creating a disc from an ISO file. Additional instructions can be found on the Customer Preview Program website.

Before upgrading from Beta 2, please install any Critical Updates from Windows Update for Beta 2. Go to Start, All Programs, Windows Update, and click the “Check for Updates” button.

Windows Vista RC1 is available for participants of the Windows Vista Customer Preview Program. Please go to the Customer Preview Program website to register and receive a Product Key, which is required to install and activate the software.

In related news, Paul Thurrott published screenshots from Windows Vista Build 5728