Yes, Windows Phone 7 confirmed as a series
 

From Engadget:

"a little Photoshop magic (okay, a lot of Photoshop magic) reveals "7 Series" underneath the decal, just waiting to be torn off after Monday's big press event."

http://www.engadget.com/2010/02/13/w...the-name/?s=t5


(mods please delete if this has already been posted)