Q. What further monetary easing measures do I expect the ECB to announce?
A. Maybe a few basis points off interest rates.
Q. Will they announce QE?
Q. Why not?
A. Because the ECB needs the Germans to co-operate, and at the moment they aren't co-operating.
There's a fuller explanation at Forbes here.
And the deeper story behind Draghi's Jackson Hole speech at Pieria here.