As I took a vacation for a few weeks after tagging Git 1.8.0 and needed about a week to sift through the backlog (although having an interim maintainer greatly helped in keeping track of topics in flight in the meantime), we have accumulated quite a few fixes since the major release on the 'master' front. These fixes have been merged to the 'maint' branch and there is the first maintenance release Git 1.8.0.1 now.
Please see the Announcement for details.