iFly and Flight1 have released the 747-400v2 for the Prepar3D v4 (64-bit) platform. As with the 737NG, the 747-400v2 is not a simple “port over” from Prepar3D Version 3, but a new version compiled from the P3Dv4 64-bit version SDK. This offers users better overall performance of aircraft systems and takes advantage of the new high-definition dynamic lighting and HDR reflections recently added to the sim. These new lighting and reflections illuminate the 747-400 airframe, ground and surrounding objects like never before.
For more information, screenshots, and to download the iFly 747-400v2, go to http://www.flight1.com/products.asp?product=ifly744p3d
For detailed installation instructions, please visit our the announcement thread in the iFly forums here: http://ifly.flight1.net/forums/747400v2-for-p3d-v4-64bit-released_topic15501.html