VERRRRY interesting. Thank you so much!

Calling anyone who has a post-April 06 HAH...

My guess is they realized that IMA was about useless for assist, and have shifted the logics to make it engage more often/agressively with lighter throttle- like to let you keep eco lit for longer while just cruising at lower speed.

Its very unusual for a mid-year stealth rollout of something that affects the vehicle so noticeably (we hope) like MPG. I can't wait to see some real results!