1. I got std.experimental.allocator accepted for inclusion. On its basis it's not difficult to build the structures and algorithms necessary for garbage collection.

However, there were two concurrent developments. One is Martin Nowak and others did great work on improving D's existing garbage collector. The other trend is that it became increasingly clear that a category of users will always be weary of a GC, be it for the right or wrong reasons. So the better place to hit is to offer a great experience in D without requiring any garbage collection at all.

2. Mobile is an important area for a language like D. We don't have many experts on team to work on that, but we're looking. One thing I can do soon is to encourage ARM support, which right now works only experimentally and in a science project kind of way.

3. I want to make it possible to use a well-defined subset of the standard library without a GC. (The subset part is for legacy compatibility.)