RPM Package Manager (RPM) version 5.1.2 was released today.
Find its source distribution under http://rpm5.org/files/rpm/rpm-5.1/

RPM 5.1 is the second major release of RPM 5 and incorporates over 300
distinguished fixes and improvements which were made since the release
of RPM 5.0 in January 2008.

The detailed CHANGELOG entries for RPM 5.1.2 you can find under:
http://rpm5.org/cvs/fileview?f=rpm/CHANGES&v=1.2288.2.30

                                       Ralf S. Engelschall
                                       rse@engelschall.com
                                       www.engelschall.com