Windows 8 RTM comes with plenty of new wallpapers . Which looks good & most of Windows 7 users want to use them . 7 Tutorials made three wonderful themes using the various wallpaper and lock screen images found in the RTM build of Windows 8.
The first theme is named Flowers and includes seven great looking wallpapers featuring beautiful flowers.
The second theme is named Earth and includes six wallpapers with great landscapes around the world.
The third theme is named Lock Screen and includes all the wallpapers used for the Windows 8 lock screen.
You can download them from here