In a statement on Wednesday, his office said: "Prince William and Miss Middleton have spent the morning in meetings with Household staff about the wedding. An announcement about venue and date will be made in due course after other Members of the Royal Family, Mr. and Mrs. Middleton and the Government have been consulted."
Of course, unlike your average commoners, William and Kate's decisions about their big day are eagerly anticipated by literally billions of people. While we wait, let's break down some of the possibilities.
When will it happen? July 8 is said to be a favored date, but July 29 is a strong possibility, too, as that is the 30th anniversary of William's mother Diana's marriage to Prince Charles.
Where will it happen? The couple have said London, which likely means either St. Paul's Cathedral or Westminster Abbey. The former is where Charles and Diana married in 1981. The latter holds sad memories for William, as his mother's funeral was held there in 1997.
Who will be the best man? Almost certainly William's brother, Prince Harry.
What does the engagement ring signify? "The whole world knows it was Princess Diana's engagement ring, and even though her marriage to Will's father turned out to be so abysmal, there was so much hope and happiness in the beginning," Kitty Kelley, author of The Royals, tells PEOPLE. "If his mother were alive, she'd probably give him that ring to give to this young woman."
What titles will the couple have? There are only a few prominent titles left. These are the dukedoms of Clarence, Cambridge and Sussex. None of these have any distinct connection to William, but they are senior titles and would be "eminently suitable," according to a heraldry expert.
Is it okay to marry a commoner? "It's the 21st century," says Kelley. "I know that the British press is making a lot out of that. … I think it's very hurtful. I think the story has worn itself out, and it should wear itself out."
What will Kate do for work? She has said she is looking forward to making a "difference," adding: "I'm willing to learn quickly and work hard." Like all royals, she will gradually build up patronages that match her interests. She already supports the Starlight charity, which helps terminally and severely ill children, and is "winding down" her current work with her parents' party supply business.
Will the public embrace Kate? "She is the wife of Princess Diana's first-born son and the heir to the throne," Kelley says. "Oh, I think there will be great goodwill extended towards her."
Could the reign ever pass over Charles to William? "No. No. Never," Kelley says. "The only way is if Charles found himself under a bus and run over and it would pass from the Queen to Wills. There are a lot of people who would like to see it that way, but it won't happen that way."
Will this wedding help the Royal Family? "I do think the marriage will reboot the monarchy," says Kelley. "Many in England are getting sick of footing the bills of the Royal Family. There's a small movement that wants to demolish the monarchy. This wedding will help them because this will bring a lot of goodwill to the monarchy."
Reporting by MELODY CHIU AND SIMON PERRY