mid year they added run off room to the outside of 8, 11/12 ( esses leading to the back straight) and outside 14. Use all that the organizers will let you. Its good for 1-2 seconds per lap.
Marcus
A new pit lane entrance @ turn 15 has also been added. The normal line through 15 is un-changed, but the pit lane entrance is prior to the apex of T15.