FCC chairman Ajit Pai says he will leave Jan. 20
axios.com
axios.com
https://variety.com/2020/digital/news/fcc-ajit-pai-leave-jan...
https://www.bloomberg.com/news/articles/2020-11-30/u-s-fcc-c...
https://www.theverge.com/2020/11/30/21726572/ajit-pai-fcc-st...
https://www.cnbc.com/2020/11/30/fcc-chairman-ajit-pai-will-s...
https://techcrunch.com/2020/11/30/fcc-chairman-ajit-pai-will...
The Variety, Bloomberg and TechCrunch stories have more meat, especially regards Net Neutrality repeal and Section 230 attempts.
Also: ArsTechnica, good detail:
https://arstechnica.com/tech-policy/2020/11/say-goodbye-to-a...
With Democrats taking control of the FCC, the agency’s net neutrality order is expected to be swiftly reinstated.
https://variety.com/2020/digital/news/fcc-ajit-pai-leave-jan...
FCC's rulemaking process: https://www.fcc.gov/general/rulemaking-fcc
There are multiple steps, though much "may" language (optional processes). I'm going to venture a few months, possibly faster. A new appointment will be required.