They go out tomorrow, 1/6, at 5pm EST!
"Hey Madden Ultimate Team Community,
We wanted to provide you with a quick update on the Monthly Weekend League Rewards for December.
Below is a breakdown of the December Rewards for Weekend League:
Please note that December Weekend League Rewards are based on 5 weeks and the number of wins has been adjusted accordingly.
We are planning to have the December Weekend League Rewards go out on Thursday, January 6th around 5 PM ET.
If we have any delays for an unforeseen reason, or rewards are distributed earlier, we will let you know."
https://answers.ea.com/t5/Madden-NFL-Ultimate-Team/Weekend-League-Monthly-Weekend-League-Rewards-December/td-p/11162702