Powered by the Linux 4.15 kernel series, which contains mitigations for the Meltdown and Spectre security vulnerabilities, and using the latest MATE 1.20.1 desktop environment by default, Ubuntu MATE 18.04 LTS (Bionic Beaver) introduces numerous improvements and new features, including better support for HiDPI (High Dots Per Inch) displays, new desktop layouts, as well as support for indicators in all layouts by default. Lots of the included components and apps of the Ubuntu MATE 18.04 LTS operating system received several improvements. Among these, we can mention the Caja file manager, which can now encrypt your most precious files, Marco window manager, which got hardware acceleration, MATE Dock Applet, which now features icon scrolling and matching, and MATE Tweak, which now lets you toggle the HiDPI mode more easily.