The latest version of NVIDIA's GeForce Experience software brings a new in-game "Share" overlay that replaces the old "ShadowPlay" feature. Install GeForce Experience 3.0, sign in, and you'll see a "Press Alt+Z to share your gameplay" popup and icons at the bottom right corner of your screen every time you launch a game.
How to Hide NVIDIA's GeForce Experience In-Game Overlay Icons and Alt+Z Notification
The latest version of NVIDIA's GeForce Experience software brings a new in-game "Share" overlay that replaces the old "ShadowPlay" feature.