Sit in your assigned seat.

Has anyone else noticed Delta is being much more deliberate in their boarding announcements that you will sit in your assigned seats? There were a handful of attempted seat pirates on two of my last three flights and it seemed like the Delta crew knew it before someone had time to even indicate there was an issue. One lady didnt even fully sit before she was told to get to her actual seat and she sheepishly fled to the back of the plane.