Goodnews is that you don’t need to wait for the official release of the Ubuntu 18.04 LTS to try the new ubuntu 18.04 wallpaper. Ubuntu 18.04 LTS is going to be available on April 26, 2018.
New Ubuntu 18.04 Wallpaper
You can download from the link below and can set it as a default wallpaper in your ubuntu or might be in your whatever linux distros that you are using. 😉
Meanwhile, you can check our wonderful tutorials for ubuntu: