Multiple sources have since confirmed to Page Six that the Duke and Duchess of Cambridge and their children, Prince George, 9, Princess Charlotte, 7 and Prince Louis, 4, will join the Queen but Prince Harry, Meghan Markle and their children, Archie, 3, and Lilibet, 1, will not make the trip.
The Californian-based royals reportedly did not receive an invitation to the Queen's Scottish estate this summer and, as such will spend the rest of the warmer months in the US as they prepare for the release of Harry's highly anticipated memoir.
While the exact release date for the memoir is still unknown, a source told the Sun, "The manuscript has been finished and gone through all of the legal processes. It's done and out of Harry's hands. The publishing date has been pushed back once but it is on track for the end of the year."
The Duke and Duchess of Sussex and their children visited the UK to celebrate Her Majesty's historic Platinum Jubilee in June.
Prince Harry and Meghan Markle were left of the Balmoral invite list. Photo / Getty Images
The occasion would no doubt have been special for the family as Archie, 3, has not seen his great-grandmother since he was only months old, and the family of four haven't been together in the UK since 2020.
The brothers continue to navigate their fractured relationship after Prince Harry and Meghan's departure from the royal family.
A royal insider told the publication: "Things are still fraught — William is still wary of spending any time alone with Harry as you never quite know what may be reported back afterwards".