Changes are coming. Delta will continue to offer complementary space available upgrades to all Medallions. However it will simply be a marketing tool. In reality Delta is trying to attract and retain high value customers. The new "enhanced" algorithms will attempt to get more high value -- FCM, fare and status -- customers into the First cabin leaving less PMs, GMs, and FOs up front. Look for even more "at gate" upgrades and fare exclusions. Say hello to Economy Comfort.

2015 will look and feel different.