In name, at least, he's gone back to the "safe is death" mantra from his Tampa Bay days. There's still shot blocking in the defensive zone, but far more important is an aggressive forecheck and being extremely fast and aggressive in zone transition. Part of how he does that is by having guys conserve energy where reasonable (fewer practices and no morning skates) and having shorter shifts on average. Being able to roll four lines regularly also helps a lot.
There's very definitely a relentless pace and push to the game, and it seems to wear other teams out while our guys keep going strong - as a consequence, the third period has basically become "our" period (today's game, in which Vancouver scored three goals against in the 3rd, was extremely unusual).
He also still calls guys out... but for things done right, rather than things done wrong. And he's not benched folks for any extended periods this year, although that may have more to do with that particular tool not being necessary.
Basically, it seems like he still has very high standards, but he's no longer a screaming clownshow dick about it. Which is pretty awesome, and is one heck of a transformation from what has been visible before.