Ubuntu 12.04 LTS (Precise Pangolin) OS will be released on 26th April and it definitely packs quite a few gorgeous wallpapers. The developer community has made these wallpapers available for download and you can get it from here. Just extract the downloaded package with help of WinRAR or any other extracting software.
The names of the default wallpapers in the Ubuntu 12.04 LTS are: Delicate Petals by lefthandgergo, Early Blossom by Dh0r, Flocking by noombox, Floorboards by Dawid Huczy?ski, Golden Bloom by Twinmama, London Eye From Beneath by Fernando García, Morning Dew by Lars_Clausen, Murales by Jan Bencini, Precise Pangolin by Vlad Gerasimov, Speaker Weave by Phil Jackson, The Forbidden City by Daniel Mathis, Tie My Boat by Ray García, Twilight Frost by Phil Jackson, and Winter Morning by Shannon Lucas.
