According to The Hollywood Reporter, it is not known whether Philip will be redesigned or the story changed. The character is voiced by Dan Stevens (Earwig and the Witch, Kipo and the Age of Wonderbeasts).
The magazine quotes a source as saying that the series does not portray Philip flatteringly. This aligns with the above still from the show, in which the man looks grim and infirm, and with the overall tone of Janetti’s comedy about the royals. For some years, the former Family Guy writer-producer has been using his Instagram to post satirical comments and clips about Prince George and his family.
The show, from writer-producer Gary Janetti, is a satire of the royal family from the perspective of young Prince George, Queen Elizabeth’s great-grandson. It was due to debut on HBO Max in late spring. The passing of the queen’s husband has scuppered that plan.