Sexy list
UI development – changes in UI files (like layouts) are dynamically updated in Preview. This is quite an improvement in comparison with Eclipse, because Graphical Layout never works fine for me. Never.
Layout previewing - layouts can be previewed on a bunch of different screen resolutions (from 2.3 inch to 7 or 10 inch tablets) in real time. At Infinum, we are always developing applications for a gazillion different Android devices, and this could really speed up our development process