The following features have been added to Maya LT 2019.2 Update:
New Substance 2.0 plug-in
Maya LT 2019.2 Update includes a new Substance 2.0 plug-in which provides new features that simplify the creating and editing of shading networks with substance textures.
For a list of features, visit http://www.autodesk.com/maya-substance-docs.
FBX Version 2019.5
Maya LT 2019.2 Update picks up the latest version of FBX (2019.5), which provides various bug fixes.
See the FBX Help for more information.