Max 7 and the level of multithreading optimisaton

Hello Cycling'74. First of all, congratulations on the Max 7 release!
I just started evaluating it, and so far (with a few exceptions) my impression is largely positive. It is a big release (literally too)!

I would like to know if any level of changes/improvements were made to multithreading in Max 7 compared to Max 6. Particularly:
- Is it possible to make use of multiple processors (multithreading) with general Max and Jitter at all? Can we specifically define a new thread for typical Max or Jitter (I know poly~'s multithreading only works for MSP)?
- Is the "Jitter world" (not to be confused with jit.world!) still being processed in the main (low-priority) thread, sharing resources with UI drawing and other Max stuff?
- Am I right in thinking that even when using poly~'s multithreading, the first voice will always reside on the main thread, sharing processing resources with all Max and Jitter stuff?

Thanks!