Not sure if it's been brought up yet, but here is leaked information on Metro redesigns.
Account login
This didn't really change much from the already known hotmail login page.
Account website
Definitely looks better then the current.
Account profile
Like the redesign, definitely a better profile.
Hotmail/Newmail
This idea is crazy, and I hope it works out.
Yes this is all leaked and subject to change, but I thought I'd bring it to attention in case it hasn't been discussed yet. If it has been discussed already, I'm sorry. :(