The major changes that people here will care about are...

• eMini & Micro Equity Index Futures for non-members going up 5c (emini $1.23 to $1.28 and Micro 25c to 30c. So Micro's going from 116% more expensive to trade to 146% more expensive IGNORING FCM fees.)
• Bitcoin & Ether futures for for non-members going up $1 (BTC from $5 to $6 and ETH from $3 to $4)
• Micro FX Futures for non-members going up 8c (from $0.16 to $0.24 which is a 50% increase).

I'd noticed that the most recent Micro futures (Bitcoin, Crude, Ether) seemed to be a lot more expensive (to the point that spread trading is unviable) to trade compared to the existing Micro's. This brings most (all?) of the cheaper Micro's more in line with the newer more expensive Micro's.

The one I personally care about is ...

• NYMEX Member Day-Trade rates up from 55c to 60c.

FULL ANNOUNCEMENT
https://www.cmegroup.com/content/dam/cmegroup/notices/ser/2021/12/SER-8897.pdf

if a trader has the money to trade the spy cash , it solves a lot of problems in this area . no commission 100% free trading . free data including level 2 . tighter bid ask spreads . less slippage. but it does take more money . 5000 will not do it . it takes 100,000 .