With the 2nd most contributions and also the one who wrote the release announcement, it seems that Jakub is the current de-facto leader. The graph suggests that

With the 2nd most contributions and also the one who wrote the release announcement, it seems that Jakub is the current de-facto leader. The graph suggests that he does not lead alone, though. edit: Upon closer inspection, it appears that Arnaud Charlet is currently the top one because he's committed a lot of Ada code for other people from AdaCore. It would take some teasing out of the GNU changelogs instead of the svn log to figure out who really wrote what. So, looks like Jakub really is the leader.