Complicated - https://www.macrumors.com/2020/10/08...ial-extension/
Extensions don't go past Feb 2021, and you had to sign up before the end of Jan 2020.
But I think I get 2 more months. My subscription current shows it renews on Dec 31 2020, but I signed up in Jan 2020 and purchased my new iPhone on Dec 30, 2019 although I did not received it until after Jan 1.
I don't see the extension yet. It should extend through Feb 2021 according to that article.