Catalog of changes at Pebble in the last 6 months:
#2 - As mentioned, new bunkers on left in scratch golfer's driving zone. Also, new trees on the RIGHT (yes, the right) of the fiarway, just short of the barranca. These trees, which look very unhealthy right now, completely change the complexion of this hole. Also, the green has been re-grassed (and slightly re-contoured) with a new strain of Bent which probably will succomb to Poa.
#9 - New back tee - measures about 490 yards.
#14 - 3 new bunkers on left of fairway and also 1 on the right, beyond the current bunker. These bunkers are clearly designed for the scratch, Professional player though the resort golfers are having a lot of trouble with them. Guess they thought ths hole was too easy.
#16 - New tee box, didn't change the yardage
#18 - New bunker on right of fairway. Trees in fairway have come down to be replaced after the AT&T. Without the trees, the new bunker is essential. With the trees, I don't know.
Most changes designed to impact the tour player though that being said, bad golfers inevitably will find trouble wherever it exists.