We just told you about the new BlackBerry Dev OS 10.3.0.700 and how it was just released to developers by BlackBerry. The OS is not a complete OS so it will be missing some vital parts. However, inside the OS sit twenty new wallpapers.
If you choose not to install the OS, don't worry, you aren't left out. You can still get the wallpapers, either all of them in a zip file or individually. One thing I did notice is that there are quite a few dark wallpapers which lend themselves to helping preserve battery life.
Download the individual wallpapers you want from Imgur here.