“I’ve noticed one annoyance with the iPad Pro however: the display shows smudges much more than previous iPads. I thought it was just me, but during yesterday’s episode of The Committed podcast, I mentioned this, and my co-host Ian Schray said that he has noticed the same thing. I need to keep a soft cloth handy to wipe the screen down often, especially if I am watching a video.”
I’ve also found the screen noticeably more prone to smudges than my iPad Air, but as others have said it’s mostly when the screen is off or using Plex.
Source: The iPad Pro and Smudges