Taken directly from its post:
We have had many requests for access to the FTP provided by Symbian Foundation. This FTP allows access to current Platform source code that was hosted by the Symbian Foundation as well as PDKs, documentation, etc.
Please note that we cannot provide login details for this FTP. To obtain a login, you must send a request to email@example.com.
We are still working hard behind the scenes to make available material on this site and more details will be updated here in the near future.
If you are looking for application developer documentation and kits, then take a look at the Symbian resources over at our sister site Forum Nokia. And while you are there why not discover and learn about developing applications for Qt, Nokia’s application development environment of choice.
This is part if the initiative, previously announced by the Symbian Foundation, to provide access the Symbian platform code while Nokia takes steps to prepare for future access and licensing.
David Gilson for All About Symbian, 12th January 2011