Supported Architectures?

[Stephen]

Hey there,

I'm considering learning D as a general purpose language.
But for that matter I would like to know how Poratble D is.
As far as I know only x86 and x86_64 are supported.
Can you tell me otherwise? What about SPARC and PowerPC for 
example?
If they are not supported yet, what do you think how long it will 
take until theye are?

Will D ever be usable for embeddet systems?

Thanks