a new line of freeware 737NGs has been announced by 'LevelUp', the product of a re-structuring of the now-defunct Ultimate Project.
The line will include five variants over the Ultimate's original three - bringing the 737-600 and 737-900 alongside the previously released 737-700, 737-800 and 737-900ER. According to the developer, each aircraft has been updated to modern-day standards.
https://www.thresholdx.net/news/lvlup1
Freeware 'LevelUp' 737NG Series Introduced for X-Plane
Freeware 'LevelUp' 737NG Series Introduced for X-Plane
Signature_Img-MD11 by Robert Sturm, on Flickr
Bob Sturm -- Sr. Command Capt. +15
V.P. Scenery Development
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Bob Sturm -- Sr. Command Capt. +15
V.P. Scenery Development
Hub Manager WSSS
XPlane 11/12, Traffic Global, Navigraph Charts
Sr. Master Scenery Designer Award
75K lb Cargo Award
20 Year Service Award
Computer: Intel i7-8700k 3.7GHz 6 Core 16GB / NVIDIA GTX-1080