I see a few of you clicked through to my blog post… Just a note to say I put up a faster version that can report on an OS upgrade such as 11.4 to 12.1 in only a few seconds (the earlier version took about a minute to do the same task - on a Phenom II 1090T) - new post is here: Code included: RPM Changelogs for Recent Updates 10x Faster
I also added an option to get the package descriptions and the ability to specify target package names on the command line.