Finding upgradable packages by priority

[Johan Grönqvist <johan.gronqvist@gmail.com>]

Hi,

I run testing and after 5 days without upgrading, I have around 100 
upgradable packages. Normally, I upgrade when reaching the (arbitrarily 
chosen) number 100, but I would like to have a better way of deciding 
when I want to upgrade something.

What I would like to have is a way of finding upgradable packages where 
the upgrade has a priority that is medium or high priority. The 
intention is to make it easier for me to find out what important 
upgrades are available, and decide based on that if when I want to upgrade.

I assume this kind of search would require downloading the changelog for 
each upgradable package, and looking at all entries that are more recent 
than the installed version, then returning a match to the search if any 
of those versions are marked priority=meduim or above.

Does anyone know of a way to accomplish what I want in an automated fashion?

Regards

Johan