All 8 designs are available in these resolutions:
1024X768
1152X864
1280X1024
1280X800
1400X1050
1600X1200
1680X1050
1920X1200
iPhone-Sized
800X600
1440x900
...And, it's super easy for us to add a design -- so if there's a wallpaper you'd like to see, let us know!