The Symbian Foundation has announced
that the source code release for Symbian is now complete. "All 108 packages containing the source code of the Symbian platform can now be downloaded from Symbian's developer web site (tiny.symbian.org/open), under the terms of the Eclipse Public License and other open source licenses. Also available for download are the complete development kits for creating applications (the Symbian Developer Kit) and mobile devices (the Product Development Kit).
" See developer.symbian.org
for more information.