GRASS 6.4.0 RC1 released

A first release candidate of GRASS 6.4.0 is now available:
-> grass-6.4.0RC1.tar.gz

To get the RC1 source code from SVN:
svn checkout grass64_rc1

An initial announcement has been drafted at

Key fixes include improved portability for MS-Windows (native support),
hundreds of fixes, wxPython based portable graphical interface and much
new functionality.

Release candidate management at

Please test, test, test...

Thanks to all contributors!