"future" for async calling?

[Nick Sabalausky]

I just came across this interesting article about a generic type "future", 
and was wondering is something like it was planned for Phobos (or Tango for 
that matter), or was already in (I haven't been paying a lot of attention to 
D concurrency), or just any thoughts about it in relation to D:

Beginning of obnoxiously multi-paged article:
http://www.drdobbs.com/go-parallel/article/showArticle.jhtml?articleID=222301165&pgno=1

Direct link to the page with the real meat:
http://www.drdobbs.com/go-parallel/article/showArticle.jhtml?articleID=222301165&pgno=3