Desktop-class apps and Freeform
Apple’s term “desktop-class apps” is an umbrella term for a lot of Mac-like features including toolbar customisation, context-sensitive menus for multiple selections, much better printing features and vastly improved find, search and replace in both Apple and third-party apps.
Freeform wasn’t in the initial iPadOS 16 update; Apple promised it for later in 2022. It’s a collaborative whiteboard for friends, family or work that you can all see and contribute to, and you can chat via iMessage or FaceTime by tapping the canvas. It’ll work on iPad and iPhone, but Apple Pencil support means the iPad will be the best canvas for Freeform’s, er, canvas.