[augustl]

If you really want to upgrade, you can run `do-release-upgrade --devel-release` (or just -d), which will get you from 16.04 to 18.04. Apparently, 18.04 is considered an development level release from the perspective of 16.04?

(I don't really know what I'm talking about here.)

[fgonzag]

Upgrades between LTS versions are officially supported until the .01 of the newest LTS afaik (so you'll get the update prompt when 18.01 is released)