Update: Ubisoft removed the post, citing inaccuracies.

A Ubisoft rep told Gematsu: “We have pulled the Ubisoft Connect article and forum post re backwards compatibility for the time being as there may be inaccuracies involving the Ubisoft titles that will be playable on PS5." https://t.co/mxfJc7kjnU

— Gematsu (@gematsu) October 30, 2020