Earlier quoted context omitted.
The only way to do productive Symbian development in a non-deprecated environment is to use Qt. Run away from anything that says "Symbian" but isn't Qt. The latest Symbian ships with a version of Qt (4.6.3) that isn't the cutting edge, but is good enough. In typical Nokia manner, they've managed to make a dog's dinner of the SDK options: there's a regular Qt SDK, a Nokia-branded Qt SDK, a Symbian^3 SDK, a technology…
Easier of cross platform development is a good reason to use JavaMe in lieu of Qt when developing for Symbian because Android does not fully support C++ development. [edit] eSWT provides access the GPU under Java.
There's an unofficial Qt android port too. http://code.google.com/p/android-lighthouse/