Ubuntu 18.04 LTS is now open for development, and during the next six months, it will receive a lot of updates for almost all the packages and core components that are usually shipped by default with Ubuntu. Linux kernel being the most important part of a GNU/Linux operating system, it’s the first thing discussed at the beginning of a new development cycle, and it looks like Linux 4.15 will be used for Ubuntu 18.04 LTS by default. That being said, it looks like the default desktop environment of Ubuntu 18.04 LTS is GNOME 3.28, whose development already started last week with the first snapshot, GNOME 3.27.1. The final release of the GNOME 3.28 desktop environment is expected on March 14, 2018, and its first point release will arrive on April 4. Canonical plans to release Ubuntu 18.04 LTS (Bionic Beaver) on April 26, 2018.