Nokia has released a Pro Series Golf theme for all N-Gage-compatible phones (it should also work on other Symbian S60 3rd Edition devices too). You can download it from n-gage.com, and install it using PC Suite. It's been available unofficially on the MOSH service for quite some time, but this is the first official release.
I don't know. It's weird, Nokia sent us the N81 with the Bounce theme preinstalled (and Pro Series Golf and Snakes Subsonic themes too) so I assume they expected us to distribute them as part of a viral marketing campaign, but they forgot to include the SIS files. There were a load of trailers on the phone too which we did put up on our YouTube channel.