2.0.0-preview (Sprint 64)

To use, simply replace your [unityProject]/Packages manifest.json file with this contents:
The FBX CSharp Bindings
{
"dependencies": {
"com.autodesk.fbx": "2.0.0-preview"
},
"registry": "https://staging-packages.unity.com"
}

Note: this will only install the C# bindings package, not the FbxExporters package.

See attachment for the binary as it can be found on bintray.com