I did get a memo that they were going to the 4 fare buckets and that things were changing a bit. But, definitely missed the memo where they stated that mileage upgrade rates could literally double.

This is the email I received:

"Some exciting changes are on their way this February. We will unveil a brand new range of fare types, based on valuable feedback from our members. You’ll have more choice and flexibility with the type of ticket you buy and more ways to maximise the Miles you earn when you fly with us.

If you’re planning ahead for a business trip, choose our Flex or Flex Plus fares so you can make any last-minute changes. Or make the most of our Special and Saver fares for a weekend getaway.

Some of the new fare types will offer even more Miles, helping you to reach your next reward and tier status more quickly. Use our Miles Calculator to check how many Miles you can earn on your flight.

Our enhanced online booking experience will clearly show the benefits and value of each fare type. So whether you want the best price or the greatest flexibility, you can choose a fare that fits your individual needs."