Originally Posted by xjtguy

MEM, DEN, IAD/DCA, and other airports got them recently, I'm sure there's a lot more to come.

They're "the latest thing".

Seems as if they're like RNAV departures at times. Spend all the time briefing them and making sure the FMS is set up correctly, only to have the controllers break you off, assign a hard altitude instead of the window allowed, etc etc etc.