I have started a new Wiki page:
http://trac.osgeo.org/grass/wiki/Release/6.4.0RC2-News
please collect recently closed tickets there, as already started
in
http://trac.osgeo.org/grass/wiki/Release/6.4.0RC1-News
The final release news with then be a collage of all individual pages
which show the current progress.
Markus