“THE HOBBIT: AN UNEXPECTED JOURNEY,” A PRODUCTION OF NEW LINE CINEMA AND METRO-GOLDWYN-MAYER PICTURES, ARRIVES ON DIGITAL DOWNLOAD ON MARCH 12  AND ON BLU-RAYÔ COMBO PACK, BLU-RAY 3D™ COMBO PACK AND 2-DISC DVD SPECIAL EDITION ON MARCH 19FROM WARNER BROS. HOME ENTERTAINMENT   Unlock a Sneak Peek of “The Hobbit: The Desolation of Smaug” on … More The Hobbit: An Unexpected Journey on Blu-ray Combo Pack 3/19