New Blender glTF importer/exporter under development

The Khronos group has released a first version of a glTF importer/exporter add-on for Blender. This will make interchanging assets with other 3D apps such as Unity much easier. Sketchfab also offers all Creative-Commons licensed downloadable models as glTF (although you can also try the new Sketchfab importer).
McNopper writes:
A new Blender glTF importer and exporter is under development. The main features are:
- Importer and exporter functionality in one add-on
- Basic Principled BSDF cycles node tree import and export
- Support for Blender version 2.79 and 2.80 (WIP)
The Blender glTF importer and exporter is already functional and improvements are still ongoing.

What’s the difference between this new exporter and the existing “official” Blender GLTF exporter? (https://github.com/KhronosGroup/glTF-Blender-Exporter vs https://github.com/KhronosGroup/glTF-Blender-IO)
Hello Stephen,
The new addon is not only an exporter, but is an importer+exporter.
This new addon ( https://github.com/KhronosGroup/glTF-Blender-IO ) is the merge of the old official exporter ( https://github.com/KhronosGroup/glTF-Blender-Exporter ) and my importer ( https://github.com/julienduroure/gltf2-blender-importer ).
Great, I look forward to using the new importer/exporter!
Will this as well help to improvecthe workflow to Unreal Engine