There is branch for attributes ( http://svn.freepascal.org/cgi-bin/viewvc.cgi/branches/joost/?sortby=date ) but a little outdated ( last commit - Sun Oct 20 20:49:45 2013 ) and incomplete (lack of finished RTTI module).Extended RTTI (+RTTI and ObjAuto module) is on my TODO list, but I don't have any timeline for this.
Initial implementation of extended RTTI (like in Delphi > 2009). To get more info you need to track revision logs for the branch...