They're a little foxed over at FSM forum re the date, because on the same page Feb. 5th is given for the release of the other releases mentioned.

Probably the Elamite cavalry charge, the End Title to Act I, and the proper 'Exodus' segment will be there. Who knows if the Prologue doesn't turn up too?

A most evocative score for a grim movie. I'd be surprised if there isn't some other hush-hush project in the pipeline.