As listed on his
agency profile and filmography page, actor Harry Melling will complete his role as Harry Potter's Muggle cousin Dudley Dursley in
Deathly Hallows.
It is unknown when Harry will be filming his scenes at Privet Drive, but we will update when more information has been made available.
Actor Richard Griffiths was
confirmed to reprise his role as Vernon Dursley in the final
Harry Potter films months ago; although no official word has been received on Fiona Shaw's return as Petunia Dursley, it can be assumed that she will be back, as well, though please treat this as a rumour.
Harry Potter and the Deathly Hallows will be released November 19, 2010 and July 15, 2011.