The D-4S engine?

So in February 2009 it was almost confirmed by next Toyota president that the engine code will be D-4S for the Toyota FT-86. Boxer flat four or Inline 4?, maybe V6? Probably with 8 injectors (4 at cruise/idle, 8 at boost?). Wether it makes to the FT-86 or 216a or not, let's gather some information about the engine.