The 737-600/700 winglet/non-winglet models are a continuation of the base package and are available as an expansion.
The PMDG Boeing 737 NGX is for Flight Simulator X and Prepar3d only and is currently available in 737-800/900 winglet/non-winglet models. PMDG has created nine aircraft for Flight Simulator 2004 and ten aircraft for Flight Simulator X, two of which are extensions of the 747-400X. On June 4, 2012, PMDG announced that they would move back to Virginia, where the company was founded. With employees and contractors working around the world, PMDG is headquartered in Northern Nevada, approximately 15 nm north of Reno-Tahoe International Airport. On 25 October 2014, it was announced on PMDG's AVSIM forum, that the Boeing 777-200LR base package will be available on the Prepar3D platform. The first aircraft development was a package of the Boeing 757 and Boeing 767 for the Fly! simulator, which could be played on Macintosh or PC.
However, the company soon moved on to developing add-on aircraft after creating only two manuals for the Microsoft Flight Simulator, 747 and 757. The company began by producing detailed flight manuals, hence its name.