Afeez, HeadClot
Meta 2 will be available in Q3 2016, unfortunately I don’t have access to early prototypes. If it’s supported by Unreal 4 and if it has an RGB video camera (yes it will have!), it will work. Maybe some additional tweaking will be necessary.
Project Tango uses both depth sensor and RGB camera. You can use the plugin with it, but it won’t benefit from the depth data.