whatsnew here:
http://harbour-project.svn.sourceforge.net/viewvc/harbour-project/tags/harbour-1.0.0RC2/doc/whatsnew.txt?view=markup
you can subscribe maling list for assistance from here:
http://lists.harbour-project.org/mailman/listinfo/harbour-users
Harbour have this supported platforms:
- Win32
- Win64
- OS/2
- Linux
- Darwin PPC
- Darwin Unibin
- HPUX
- BSD
- DOS32 (DJGPP 4.2.3)