The new plugins overview page is probably one of the coolest visible new features in WordPress 4.0. In a lightning-fast (for WordPress standards), 7-week sprint, ticket #28785 moved from an idea and a wireframe to a full new implementation for the plugins overview screen in WordPress. The new plugin overview bears quite some resemblance to the new themes overview, and is set to not only feature additional plugin information in a structured way, but plugin icons as well.
Interested as I was in this new plugins screen, I implemented the patch in my local environment. And, for testing the icons, I mocked up and implemented the icons for Admin Columns, as no other plugins featured icons yet. And, I must say, the result was absolutely stunning.