With the idea of c6-c5.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. e1g1  4... f6e4  5. d2d4  5... e4d6  6. b5c6  6... d7c6  7. d4e5  7... d6f5  8. d1d8  8... e8d8  9. b1c3  9... f8e7  10. c1f4  10... f5h4  11. a1d1  11... d8e8  12. f3h4  12... e7h4  13. c3e2  13... h4e7  14. e2d4  Preparing e5-e6, White's most powerful break against the Berlin. This  novelty should not have come as a surprise for Aronian.