Warner Bros. will release the next two “Harry Potter” films in 3D, a move underscoring the post-”Avatar” rush for extra-dimensional box office returns. Studio executives around town have been scrutinizing film slates for opportunities to expand forays into 3D releasing. Warners has been testing footage from its upcoming “Clash of the Titans” - converted into 3D by an outside vendor - and the tests have gone so well that the studio has decided to release not only “Titans” but also the two-part “Harry Potter and the Deathly Hallows” in 3D. Warners refused to confirm the decisions Tuesday, but an announcement on “Titans” - a co-production with studio-based producer Legendary Pictures - is expected by week's end. Official word on the “Potter” pics also is awaited. In a related move, Warners will push back the release of “Titans” one week to April 2. “Deathly Hallows: Part I” is set to unspool Nov. 19, and “Part II” is slotted for July 15, 2011. The only previous “Potter” pic to dabble in 3D was last year's “Harry Potter and the Half-Blood Prince,” which included brief footage viewable in 3D in Imax venues. It was unclear whether “Potter” author J.K. Rowling had to OK the move into the third dimension.
