Nokia recently clarified via a blog post the status of Symbian's code. Though Symbian was an open source platform in the past, it no longer is. That doesn't change the fact that it continues to be available under license to hardware makers and software developers so that new products can be brought to market. Nokia said it will continue to work with its OEM and developer partners, but those parties will no longer be able to contribute back to the Symbian source code. Nokia said, "The Nokia Symbian License is an alternative license which provides an access to Nokia’s additional Symbian development for parties which collaborate with Nokia on the Symbian platform."
http://www.bgr.com/2011/04/08/nokia-symbian-is-no-longer-open-source/
