http://wiki.dlang.org/DIP25 has been preliminarily approved for 2.067

[Brian Schott via Digitalmars-d]

On Friday, 16 January 2015 at 21:41:25 UTC, Andrei Alexandrescu 
wrote:
> Please help us work the kinks out! Walter will be proceeding 
> with the opt-in implementation for quicker pipelining.
>
> http://wiki.dlang.org/DIP25
>
>
> Andrei

I added support to my tools a few days ago:

https://github.com/Hackerpilot/libdparse/commit/fc9dacfa41c0bae258814ad64e58ffaae6b961cc

Now I need to make a pull request that updates the official 
grammar...