As you might know, Ubuntu 16.04 LTS (Xenial Xerus) is a long-term supported release, which means that it will receive security fixes and software update for five years, until April 2021. During this time, the OS usually gets a total of five point release. Currently, Ubuntu 16.04 LTS and 16.04.1 LTS are powered by the LTS Linux 4.4 kernel branch. That’s about to change with the release of Ubuntu 16.04.2 LTS, as Canonical plans on delivering a newer HWE (Hardware Enablement) kernel based on the one used in the Ubuntu 16.10 (Yakkety Yak) operating system. In other words, Ubuntu 16.04.2 LTS will be powered by Linux kernel 4.8, and also adopting a rolling HWE kernel model.