discovered current rpm-python in rawhide breaks up2date. This should get fixed soon. In the meantime, up2date-4.3.8 has a workaround. This should only show up if reading the headers of packages with no files (like setup, for example) but that often gets hit when doing a full upgrade.
Started work on up2date repo support for the new rpm metadata format currently being developed by skvidal, and others. It seems to have reached the point of useability.
Have half working code for a "cmdline repo" as well. Aka, support for "up2date /path/to/something-1.0-1.i386.rpm" and having up2date do the right thing. For various reasons, thats harder than it should be, but alas.