We've certainly delved into Android 4.1 Jelly Bean's new features, but Google itself is just now giving us a full exploration of its update's sugar-laden heart through an official changelog. While Google Now, the updated camera app and other core components easily get their due, the checklist also has a decidedly more buttery feel than one would think -- key individual apps like Calendar now have more elegant transitions to go with the leaps and bounds in Android's overall speed. The breakdown even goes into corners that Google scarcely illuminated during the Google I/O keynote, such as accessibility and the finer nuances of the new keyboard. If you're the sort whose Jelly Bean fever has you checking for thatGalaxy Nexus upgrade so often that you're nearly punching a hole in the screen, Google has your (no doubt temporary) placebo.