I just got done playing for a few hours and they changed some things in the game.
1. No retries, no more can you boost the same quick money-rp making missions.
2. The money you make during the races has been reduced. Racing was a very easy way to level up and make money.
There is no official announcement that it's a reset of stats, but with those changes it's obvious to me that it is.
It's boosting. Not as bad as taking advantage of certain glitches, like robbing a store and switching to your offline character then switching back for endless amounts of extremely easy money, but it's boosting just the same.