Update manager disables ppas during upgrades. So since we're using ppas it wouldn't work.
It would need to be patched to used lsb_release -u so that it sets the repos to "trusty" and not "freya" (which doesn't exist)
If we were to patch the update manager in Luna, it would be do-able, but there could be a lot of other issues we haven't even seen because it hasn't been done yet.
danrabbit from IRC said the information below.
As far as I know there are a few issues.
Update manager disables ppas during upgrades. So since we're using ppas it wouldn't work.
It would need to be patched to used lsb_release -u so that it sets the repos to "trusty" and not "freya" (which doesn't exist)
If we were to patch the update manager in Luna, it would be do-able, but there could be a lot of other issues we haven't even seen because it hasn't been done yet.