Problem with update manager

[Paul Smith]

On Sun, 2016-04-24 at 15:17 +0200, Андрій Шелунцов wrote:
> Hello.
> Update manager does not show update to 16.04 

Please always specify which version and flavor of Ubuntu you're running
now whenever asking for help.

If you're running Ubuntu 14.04 LTS, that's expected.  Unless you
specifically request it, you won't be offered an upgrade until Ubuntu
16.04.1 is released.

If you're running Ubuntu 15.10, then you may need to wait a few more
days to be offered the upgrade.

If you're running any other version, upgrade directly to 16.04 is not
available.  You'll first have to upgrade to one of the above two
versions.

You can force an upgrade if you want with "sudo do-release-upgrade".  Be
sure you've completely upgraded your current version first!

Be aware that the sooner you upgrade the more likely you are to run into
issues...