The New Hotmail is Beta and its open to the general public. If you'd like to sign up for the beta, just click on the link below and follow the steps listed.

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

Check out the video of the next-generation of Hotmail, code-named "Kahuna."
You meet the team which is located at Microsoft's Silicon Valley campus, hear their design philosophy, and get a first look.

http://channel9.msdn.com/Showpost.aspx?postid=118322