It's still pretty primitive and the only part that is likely to be of much interest is the instanced rendering path.
It was almost disappointingly easy to get working. I reckon there is still room for improvement, but flicking through the Instancing10 SDK sample made it trivial to get a simple implementation up and running.
I've yet to compare performance with the horrific brute-force renderer which does CPU-side transformations ([wow]) but I did check the VRAM consumption:
Brute Force - 16.5mb
Instanced - 270kb
Can't complain at a 63x improvement [grin]
Anyway, time to decide what goes in the Alpha-2 build... I'm thinking I'll focus on getting some form of lighting up and running next.