Thanks for the post, LoopyCrown3.
The new (12th) earl's full name is Luke Timothy Charles MONTAGU.
Although DPB hasn't updated this page yet, based on the current page, the line of succession should be as follows:
1. William James Hayman, styled in his father's old courtesy title, , Viscount Hinchingbrooke, b. 2004
2. Hon. Nestor John Sturges, 2nd son of the 12th Earl, b. 2006
3. Hon Aneurin David SF, 3rd son of the 12th Earl, b. 2014
4. Hon. Kit James SF, 4th and youngest son of the 12th Earl, b. 2017
5. Hon. Orlando William, brother of the 12th Earl, b. 1971
6. Walter Frederick, son of #5, b. 2005, also, a maternal grandson of the Marquess of Douro
This is one title that has plenty of heirs.
Brooke