We understand that “Newmail” will be available on an opt-in basis (at least for the beginning), so users who prefers the old Hotmail experience can continue to use it for a while. For those who do choose to upgrade however, below are what’s new about the service, according to the introductory email for “Newmail” (and we think it might be there as a placeholder):[indent]
- A modern interface: faster and cleaner
The simple, fluid and interactive design of Newmail makes it easy to use whether you’re on a desktop, phone or tablet.
- Get a Newmail email address for your new inbox
You get a new email address from Newmail. You don’t have to worry about your contacts and previous emails, you’ll keep them. And, you’ll continue receiving messages sent to your current email address.
- Bring your inbox to life – Connect Facebook
Connect and chat across services like Facebook and Twitter. Keep your contacts information automatically in sync, and see what your friends are up to, right from Newmail.
Source - http://www.liveside....t=Google+Reader
tl;dr - Hotmail rebranding to Newmail, opt-in new UI.