Comment 7 for bug 1497024

When I run update-manager on Trusty, I correctly get, "The software on this computer is up to date. However, Ubuntu 15.04 is now available (you have 14.04)."

do-release-upgrade doesn't work though, and 'do-release-upgrade -d' offers an upgrade to Utopic.

$ sudo do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1,221 kB]
Fetched 1,221 kB in 0s (0 B/s)
authenticate 'vivid.tar.gz' against 'vivid.tar.gz.gpg'
extracting 'vivid.tar.gz'

Reading cache

Checking package manager

Cannot upgrade

An upgrade from 'trusty' to 'vivid' is not supported with this tool.

$ do-release-upgrade -c -d
Checking for a new Ubuntu release
New release '14.10' available.
Run 'do-release-upgrade' to upgrade to it.