It should be possible to view details (description, target version ... ) of a patch file. There is no other way to display this information except unziping patch file and opening patch.xml.
verified on 6.4.0.DR1.1 it works only for one-off patches, not for cumulative patches.
https://bugzilla.redhat.com/show_bug.cgi?id=1144022 for adding support of cumulative patches