A new freesurfer release is now available, v4.5.0:

http://surfer.nmr.mgh.harvard.edu/fswiki/Download

The release notes page describes the bug fixes and new features:

http://surfer.nmr.mgh.harvard.edu/fswiki/ReleaseNotes

Mainly this release is intended to make available necessary improvements to the longitudinal analysis stream.

Freesurfer team