As I recently got yet another round of requests to make Gammu work with 3rd generation of Symbian phones. I know there is still more and more of them, but none of developers have possibility to port gnapplet to work with these phones.
Basically all required steps are described on Nokia website, so it should not be that hard. It only needs somebody who is able to write in C++. You can get CDK for Symbian phones for free (eg. from Nokia, but I guess that from any phone vendor) and start to port gnapplet. Any contributions in this area are welcome, because I can't do much without Symbian phone.