Very nice changes indeed, timely and clearly communicated even for the negative changes. I'm glad I made the switch.
Positive:
Lounge access for Gold
Plats no charge for same-day standby
100% EQM on all fares irrespective of booking channel (!)
No Sat. night requirement on reward travel
Lower fees for award changes and last minute bookings, free for Plats. This is a very nice and reasonable fee schedule.
Negative:
Higher reward levels (TATL from 50k to 55k)
Loss of earning partners (Amtrak, Hawaiian etc.)
Reduction from 150% EQM to 125% EQM in business class