3.3.0 primarily contains tool enhancements: a restored and improved version of Helgrind (thread checker), majorly revamped version of Massif (space profiler), branch-mispredict profiling for Cachegrind, and new experimental tools (Omega and DRD). Also includes support for recent Linux distros (Fedora 8, openSUSE 10.3), scalability improvements (for gigabyte-sized applications), modestly improved documentation, fixes for 56 bug reports, experimental support for AIX5.3, and many minor refinements.
Valgrind current releases
Valgrind 3.3.0 release notes
