With improvement comes "WTF happened to my [your favorite thing goes here]?!?!?"
Somewhat useful Shortcut Keys Changed in 2.8x.
✦ EEVEE: EEVEE. A new physically based realtime renderer. It works both as a renderer for final frames, and as the engine driving Blender’s realtime viewport for creating assets. Only uses the GPU to render (no plans to use the CPU in the future).
✦ Ambient Occlusion: