HWE Kernel provides a way to get the latest hardware support within an LTS release. The kernel includes code backported from newer releases. In addition to an updated HWE Kernel, for desktop users, an updated X Stack was also delivered.
The HWE Stacks are meant to be used as a stepping stone to move a customer/user to the next LTS release.
See a discussion of the Rolling HWE Stack on the Ubuntu Wiki.
sudo apt-get install --install-recommends linux-generic-hwe-16.04 xserver-xorg-hwe-16.04
sudo apt-get install --install-recommends linux-generic-hwe-16.04