With TerraMAXX recently released, bringing seasons to the X-Plane platform, Maxx-XP has today released the freeware UrbanMAXX v3: TerraMAXX Edition addon to compliment the seasonal environment.
This release of UrbanMAXX is designed to work in conjunction with TerraMAXX to add dense seasonal autogen to the X-Plane landscape within the urban environments. The use of USGS satellite imagery for the development of this product ensures high accuracy for a more immersive feel.
The addon is released as freeware but does require TerraMAXX for full functionality.
You can grab it from the Maxx-XP website right now.