Over the last week I have updated both my Nexus 7 and my Galaxy Nexus to Android 4.1.2 (Jelly Bean).
|Landscape mode on the Android 4.1.2 Nexus 7|
Both on the Nexus 7 and on the Galaxy Nexus I have noticed improvements on screen responsiveness, fluidity of UI animations and a slightly faster performance when dealing with location based services.
On the Nexus 7, there is a new landscape mode for the homescreen, which makes things easier when the tablet is in a case in landscape mode.
It will be interesting to see how things change when Google announce Android 4.2 (Key Lime Pie). Maybe they will do it on Monday 29th October