He didn't give away many hints about Episode III, the third of the three films set before the original trilogy and not due out in cinemas until 2005.
But he did give a small clue.
"If you think of the first scene inside the spaceship, which you will see on this DVD, when you first see C-3PO and R2-D2.
"Think of that, there's a white corridor... Wait till you see Episode III - you might just recognise the same set!" said Anthony Daniels.
Star Wars Episode IV: A New Hope, Episode V: The Empire Strikes Back and Episode VI: Return of the Jedi will be available in the collection.
It includes a bonus disc filled with special features, including a feature-length documentary and never-before-seen footage from the making of all three films.
To watch the full-length feature catch Newsround Showbiz on the CBBC channel on Saturday 18 September at 3.50pm.