First off, the Settings app now promotes the new Size and Position feature, I will use this green text area to show all the new features from now on:
Then the Size and Position screen can only be launched from double tapping the wallpaper, not from the recent task list. It now has a more streamlined look:
As soon as you start dragging the cube, the info panels disappear so you can see the whole screen and the draggable boundaries appear in red. Stop dragging, and the info panels come back.
Start dragging the edges to resize, and once again the info panels are temporarily hidden, so you can more clearly see what you are doing as you resize the cube. Stop dragging, back they come.
Off to the Market with you!