More unlocked features in Windows 8 build 7955.
Apparently by making a little tweak to the user theme file, you can configure Windows 8 to use your wallpaper as the startup home screen.
The tweak is the following:
- edit the theme file at C:WindowsResourcesEase of Access Themesbasic.theme
- Change the line that says “SetLogonBackground=0” to “SetLogonBackground=1”
- Reboot your PC
You should now have a Windows 8 lockscreen wallpaper.