Interested in checking out and beta testing the next version of Hotmail (code-named Kahuna)? Willing to provide feedback? Microsoft's newest web-mail client is in testing and the poll of testers is being expanded. You can sign up to be considered for testing here:

http://www1.imagine-msn.com/minisites/hotmail/Default.aspx

You can also see a few scrren snips and descriptions of some of the new features here.

Omar Shahine (Hotmail "front door" program manager and all-around good guy) posted the link to the signup on his weblog.