Ubuntu 16.04 LTS ships with a modified version of Linux 4.4 kernel. Ubuntu 16.04 - New Features Linux Kernel 4.4 You can upgrade to Ubuntu 16.04 from Ubuntu 15.10 and Ubuntu 14.04 LTS using the Update Manager app. Remember: you do not have to do a fresh install to get this release. You can download Ubuntu 16.04 LTS faster (and help other users get theirs quicker too) if you use the official Ubuntu Torrents: Scroll down to find out what’s new & improved in this release, or hit the download below to start downloading an. Support for Ubuntu 16.04 LTS desktop ends in 2021, Canonical will continue to provide some critical updates as an ESM release, but only for enterprise and sever customers. Also Read: ‘ 16 Things to Do After Installing Ubuntu 16.04 LTS‘