SpeedTree for UE4 Subscription v7.0.7, released July 22, 2014, includes our first version for Mac OSX.
The new release also improves lightmap UV generation in the Modeler, permitting you to tune for a small texture and see the results immediately on a larger texture without disrupting the layout. This technique allows you to tune for very small lightmap resolutions (e.g., for use with painted instances) but still preview the lightmap density at higher resolutions.
7.0.7 also addresses a number of issues related to the creation of specular atlases. With this update, specular atlases are included with all models in the SpeedTree Store, as well as the three free sample trees. Also, the SpeedTree for UE4 Modeler and Compiler will now create correct specular atlases.
If you subscribed to SpeedTree for UE4, purchased any trees or downloaded the three sample trees prior to July 22, please log back into your account and download the updated materials.