Software Updater on 16.04 not showing Ubuntu 18.04 update [duplicate]

Software Updater on Ubuntu 16.04 doesn't show Ubuntu 18.04 update. I have checked and all settings are good.

What do I need to do?


From this Ubuntu Wiki we have the notice:

Upgrading from Ubuntu 16.04 LTS or 17.10

Upgrades from 17.10 will not be enabled until a few days after 18.04's release. Upgrades from 16.04 LTS will not be enabled until a few days after the 18.04.1 release expected in late July.