This is from People UK — hardly the most reliable source…
Prince William will make his dad’s Scottish hideaway his home after he marries Kate Middleton. The couple have already spent several romantic weekends at remote Birkhall, on the Queen’s Balmoral estate.
And aides reckon Wills, 27, will pop the question there once he’s finished his helicopter training with the RAF. “They have fallen in love with Birkhall and Prince Charles is keen for it to be handed on to them when they wed, which is highly likely next year.”
Sources say the prospect of him marrying Kate next year is “very high”. One said: “He’ll have completed his training by then and will have run out of excuses for keeping Kate waiting.”
“It was the Queen Mother’s favourite retreat and when she gave it to Charles she was adamant it must remain a fixture in the lives of the senior royals. Charles and Camilla used it for their second honeymoon in 2005 and offering it to William and Kate is the perfect way to ensure its continued use.”
Article: People UK
Prince William and Prince Harry are planning their first official tour together in South Africa later this summer. The trip – slated around June – is expected to include attending one of England’s World Cup football matches.
How did the couple — who are back on after last year’s 8-month break up — spend Valentine’s Day? According to Richard Kay of the Daily Mail, it’s dinner at Julie’s Restaurant in Holland Park, West London. It’s a popular place among celebrities and royals. Prince William and Kate Middleton — 
On a side note, Prince William is on the current cover of Hello! Magazine (dated Feb 22, 2010) with exclusive candid pictures taken by amateur snapper Jeff Hubbard – a man who until a few years ago was homeless in despair. The stunning shots are the result of an extraordinary and unique collaboration in support of the national homelessness charity Crisis, and were taken under the guidance of renowned photographer Rankin.