What's new in PowerPoint 2013?
Based on the consumer preview, below is roughly the list of new features you will expect to see. More detailed information will be up when it is officially release.
Better reorder feature selection pane
Welcome back - where you left last editing.
Save as mp4 video!
Better presenter view, show presenter view in slide show.
Slide sorter in slide show
Advanced editing and artistic effects on background image.
Crop to shape
Crop to aspect ratio
Crop to fill
Crop to fit
Reset picture and size
Right click > shortcut style, fill and outline for objects.