Comment 6 for bug 1577215

With the fix for this bug I'm dropping the clearly obsolete question, but IMO adding different questions would confuse less experienced users.

I think power users who can cope with regressions caused by packages from sources coming from sources not allowed by unattended-upgrades by default should be able to change the u-u configuration file - or add new configuration files overriding default values.

Optionally updating packages automatically from PPAs or unofficial sources would be indeed be a feature that could be made available in an easier way, but I think it would be better to track this potential improvement in a separate bug.