Agreed.
Well, Shannon was definitely not on the plane. Some of the other changes were interesting, too--Hurley saying nothing bad ever happens to him, Jack's dad not being on the plane. I guess the numbers are no longer cursed? Not sure about the significance of Jack's and Shannon's situations.
Originally, Boone went to Australia to get Shannon away from this boyfriend guy who was beating her up. Shannon made Boone leave, Boone tried bribing her boyfriend, I can't remember exactly what happened, but Shannon came to Boone's hotel room and they had some hot step-brother-on-step-sister action and she went on the plane with him. So something must have changed in this new timeline.