The grid gone, at least for now. Exposé (now a part of Mission Control) returns more or less to its old behavior. Windows are resized proportionally and no more

The grid gone, at least for now. Exposé (now a part of Mission Control) returns more or less to its old behavior. Windows are resized proportionally and no more arranged in a grid. Quicklook continues to work and Exposé now stacks the windows of one application together. It is no longer possible to show minimized windows in Exposé. The dock is still displayed but clicking on an icon no longer displays the windows of that app in Exposé, OS X will just switch immediately to that app (the normal dock behavior). The Dashboard, all spaces and all fullscreen apps are displayed along the top of the Exposé view. It’s now possible to change the background image for each space individually but no longer possible to arrange Spaces in a grid (there is always a row of spaces). Clicking on a space in Exposé displays all its windows in Exposé mode. The bird’s-eye view of only the spaces is gone but you can drag windows in Exposé from one space to another. The arrow key Spaces shortcuts also allow you to switch to the Dashboard or fullscreen apps.