You may have read this before. In fact, one year ago, tomorrow, we published a very similar story. Some of the personnel has changed, but not much else. The Washington Capitals still use the 1-3-1 on the power play. The Pittsburgh Penguins still use the umbrella.
Not too much has varied on the PK as well. The Caps use a diamond/wedge, and the Pens use a similar diamond that can rotate into a box. Both rely on pressure. This will be the story of who executes and specifically how.