Possibility of non stop-the-world GC in the future?

[Nicholas Smith]

On Tuesday, 19 February 2013 at 08:11:10 UTC, Don wrote:
> CDGC is not abandoned. We've been using it in production code 
> for a very long time, in an extremely demanding environment. 
> Luca is presenting a talk about it at the D conference.

Is that so? What state is it in? It appears not to have been 
spoken of or worked on for quite a while now.