Zune Scene posted some information on the upcoming Zune 2

We have some exciting news on the Zune 2 from our source inside of Microsoft. We can now endorse the image leaked by Gizmodo as a legitimate representation of the Zune 2 players. We have also verified that in addition to the pink, red, and black colors an "Army Jeep Green" color will also be available for the smaller flash Zunes. Although the Zunes in the leaked image appear glossy, they will actually have the same doubleshot surface as the original Zune. The navigation button has been replaced with a new "squircle" shaped button, which is a square with rounded edges. It will not have a separate center button as the original Zune does, but the functionality will be the same. The current launch date is scheduled for October 16th, exactly 3 weeks after the Halo 3 launch.

Zune 2 October 16th Launch Confirmed