It feels as though we’re watching the drama of the biopic series play out in real-time.
The next monarch will be Imelda Staunton (viaBT TV).
BT TV reported the rest of the cast as well.

Jonathan Pryce will take over as the Queen’s husband, Prince Philip, Duke of Edinburgh.
The role was previously played by Tobias Menzies and Matt Smith.
Emma Corrin’s role as Princess Diana will now be played by Elizabeth Debicki.

EvenQueen Elizabeth II, herself, allegedly tuned in for every episode of “The Crown.
The season will also cover King Charles III and Princess Diana’s divorce.
As for the new cast, they will be returning for the fifth and sixth seasons.

Hopefully I look calm, collected and capable.
My stomach, meanwhile, is doing somersaults.”