[plt-scheme] single OS thread

Hi,

I'm trying to write Cocoa app using the FFI, but it's painful,  
because PLT is all in one OS thread, and Cocoa is finicky about  
getting called from non-event-loop threads.  So I'm wondering, has  
anything changed since this post in 2005?  Still no plans for  
multiple OS threads?

http://article.gmane.org/gmane.lisp.scheme.plt/9222

thanks,
Rob