I've recently checked out the Symbian website, and have realized the usefulness of the Symbian Phones section. It's a database of perhaps all contemporary smartphones running on a licensed copy of the Symbian OS, even the ones from Japan, and is divided into Available Now, Coming Soon, and Discontinued. This means you get to see even past models.

Each entry features a brief description of the gadget, as well as a spec summary.
Kudos to Symbian for maintaining a comprehensive, if somewhat slightly behind, resource on their licensees. So unlike the Windows Mobile site that's lacking info on several models.