Please tag hplip-3.9.8-21.fc12 for f12-final. This is low priority. Here is the change:

{{{
* Mon Nov 2 2009 Tim Waugh twaugh@redhat.com 3.9.8-21
- Added 'requires proprietary plugin' to appropriate model names
(bug #513283).
}}}

This change can be seen in system-config-printer when clicking New, selecting HP as the manufacturer and then selecting (for example) LaserJet 1020 as the model. Whereas previously it just said:

{{{
HP LaserJet 1020, hpcups 3.9.8 [en]
}}}

it now says:

{{{
HP LaserJet 1020, hpcups 3.9.8, requires proprietary plugin [en]
}}}