Has the Android Stack seen any remarkable updates in Jelly Bean 4.1? I am referring to the stack of components and libraries as shown in this picture:

Has the Android Stack seen any remarkable updates in Jelly Bean 4.1? I am
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I was at the Google I/O and at least at the session I did attend they did not present anything new. The core technology is the same – they’ve just introduced some new features in the Kernel & system like Triple Buffering.
The visualization you put in your post is abstract & generic enough to be correct 😉