9th: The Cambridges will join senior royals at the Horse Guards for a dedication that will mark Britain's involvement in Iraq/Afghanistan. This event is a precursor to the Queen unveiling a new memorial paying tribute to those who served in the conflict.
17th-18th: Paris! William and Kate will spend two days in Paris on a number of events. Details pending.
23rd: Kate will shine the spotlight on maternal mental health as she attends the debut of a series of films produced by Best Beginnings in cooperation with Heads Together.
28th: the Duchess will attend the National Portrait Gallery's black tie Portrait Gala.
May 13th: William, Kate, and Harry will host a tea party at Buckingham Palace for children who have lost a parent in the armed forces.
William and Kate will travel to Germany and Poland at the request of the Foreign Office.The length of the visit will be announced at a later date.