diff -up Ardour-5.12.0/libs/ardour/revision.cc.appdata-revision Ardour-5.12.0/libs/ardour/revision.cc

--- Ardour-5.12.0/libs/ardour/revision.cc.appdata-revision	2017-09-15 17:10:17.000000000 -0400

+++ Ardour-5.12.0/libs/ardour/revision.cc	2017-09-19 14:56:36.928102435 -0400

@@ -1,2 +1,2 @@

 #include "ardour/revision.h"

-namespace ARDOUR { const char* revision = "5.12"; }

+namespace ARDOUR { const char* revision = "5.12"; const char* date = "2017-09-14"; }