Title: Harry Potter and the Order of the Phoenix
Role: Luna Lovegood
Status: Post-Production
Release Dates: 11 July 2007 (USA)  
Official Site: here

Synopsis:
After a lonely summer on Privet Drive, Harry returns to a Hogwarts full of ill-fortune. Few of students and parents believe him or Dumbledore that Voldemort is really back. The ministry had decided to step in by appointing a new Defence Against the Dark Arts teacher that proves to be the nastiest person Harry has ever encountered. Harry also can't help stealing glances with the beautiful Cho Chang. To top it off are dreams that Harry can't explain, and a mystery behind something Voldemort is searching for. With these many things Harry begins one of his toughest years at Hogwarts School of Witchcraft and Wizardry.

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Title: Harry Potter and the Half-Blood Prince
Role: Luna Lovegood
Status: Filming
Release Dates: November 21st, 2008 (USA)
Official Site: here

Synopsis:
As Harry Potter begins his 6th year at Hogwarts School of Witchcraft and Wizardry, he discovers an old book marked mysteriously "This book is the property of the Half-Blood Prince" and begins to learn more about Lord Voldemort's dark past.