Miles needed to upgrade have been substantially increased.
Currently:
DXB to JFK
Upgrade Business to First
Skywards Saver 57,500 Skywards Miles
Skywards Flex 45,000 Skywards Miles
Under the new system:
DXB to JFK
Business to First
Skywards Saver 70 200 Skywards Miles
Skywards Flex 54,000 Skywards Miles
Ouch

A little more honesty upfront would have been nicer. Trying to sell this as an "enhancement" is hardly going to fly with their premium passengers ...