I'm going to have to vote no as well. The most recent changes aren't small and haven't been thoroughly reviewed, and from what little review of it there _has_ been, I think that it's pretty clear that there are still issues that need to be sorted out. The custom allocator scheme is critical to the standard library and needs to be solid before we introduce it into Phobos, and it's not at all clear that the current API is all that solid. Good progress has been made, but I think that it needs more bake time.
- Jonathan M Davis