D-Day for DMD is today!

[via Digitalmars-d-announce]

On Sunday, 23 August 2015 at 05:17:33 UTC, Walter Bright wrote:
> We have made the switch from C++ DMD to D DMD!

What is the relation between the .h files that were left intact, 
and the backend, GDC, and LDC? When the backend is converted to 
D, will the DMD source drop the C++ header files, or will (some?) 
of those be left behind because GDC and LDC will always use some 
C++ interfaces in their glue code?