AnandTech notes part of yesterday's announcement of new features for GeForce Experience was word that in the future, users of that program may get first crack at game-ready drivers over those who just want to download drivers without any added experiences. The update doesn't explicitly say that driver updates will be delayed for non-Experience users, but the implication is certainly there, as they say:

In the new GeForce Experience Beta update we’re adding an email registration feature so we can better support and communicate with our users; the next time you download a Game Ready driver through GeForce Experience you’ll be asked for a verified email address. After that you’ll have instant access to drivers, will receive NVIDIA product news and announcements, and have the chance to win hardware, free game codes, early access to game betas, and other cool stuff.