Windows 8.1 Preview

An article about pre-release versions of Windows 8.1.

Builds 9419 to 9483
At this point in development, Windows 8.1's wallpapers are identical to 8's, except that img3 is also used as img0, while builds 9415 and earlier feature Windows 8's default wallpaper.

Builds 9419 and earlier
At this point in development, Windows 8.1's lock screen wallpapers are identical to 8's.

Builds 9431 to 9483
By build 9431, img100 has been replaced with a new one; with the exception of img105, all of the lock screen wallpapers leftover from Windows 8 (img100, img101, img102 and img103) were reallocated to img101, img102, img103 and img104 respectively, replacing 8's img104.

Trivia

 * New sets of wallpapers were only introduced in the RTM release, late than the case of Longhorn (Windows Vista).