Ubuntu 15.04 Vivid Vervet Community Wallpaper available to download. Every new release of Ubuntu are also have new wallpaper by default. The default wallpaper are chosen through a contest in which any user can participate by sending its own wallpaper but it should be according to the various guidelines required by the developer of the Canonical Design team.
More detail read on – Ubuntu 15.04 Vivid Vervet Community Wallpaper
