The driver is making solid progress. I've posted a todo if anyone want to take a shot at hacking on the driver. Much of the pipeline works similarly to older asics so a lot of things can be ported from r600g.
Thank you for posting the todo list. I'm poking one of the R600 OpenCL tasks at the moment, but if I get some SI hardware then I'll definitely pick something up (a new laptop might be coming my way).