When does Good Omens return?

Good Omens is a fantasy comedy television series based on Terry Pratchett's 1990 novel of the same name. Michael Sheen and David Tennant lead a large ensemble cast that also includes Jon Hamm, Miranda Richardson, Michael McKean, Derek Jacobi, Brian Cox, Benedict Cumberbatch, and Frances McDormand as the voice of God. Like the novel, the series features various Christian themes and figures and follows various characters trying to either encourage or prevent an imminent Armageddon, seen through the eyes of the angel Aziraphale and the demon Crowley.
The first series, set in 2019, follows the demon Crowley and the angel Aziraphale. They are longtime acquaintances who have grown accustomed to each other's company. When told that Armageddon is about to happen, they team up to prevent the coming of the Antichrist. The second series concerns the Archangel Gabriel arriving without his memories.