So Amazon Prime will be adding ads starting Jan 29th

[RainCaster]

12. The emails from Prime

What they sent me first:
We are writing to you today about an upcoming change to your Prime Video experience. Starting January 29, Prime Video movies and TV shows will include limited advertisements. This will allow us to continue investing in compelling content and keep increasing that investment over a long period of time. We aim to have meaningfully fewer ads than linear TV and other streaming TV providers. No action is required from you, and there is no change to the current price of your Prime membership. We will also offer a new ad-free option for an additional $2.99 per month* that you can sign up for here.

Next email, as expected:
We are confirming that you have opted to end your Prime membership. You will continue to have access to your benefits until your membership period ends.