Version 4.10 of RPM has been released with many new features.
RPM 4.10 supports the Debian packaging (dpkg) style sort of tilde in versioning (e.g. when appending
~beta to a package string), 7-Zip compressed package sources, improved validity and consistency checks, support for determining conflicts within an RPM package itself, and overall robustness improvements.
More information on the RPM 4.10 release is available from
the release announcement although the more verbose information is found on
the RPM.org Wiki.