Dallas-based American Airlines recently announced significant changes to its loyalty program AAdvantage. According to The Points Guy, the new policies were initially supposed to come into force on May 1st, but the airline decided to push the date to July 11th, giving customers a few more months to adapt. We covered the announcement earlier this month, but reviewing some of the most significant changes is essential to come to the oneworld carrier’s frequent flier program as the dates have changed.