We do not have any plans to support iPhone 6 Plus and 7 Plus, as they are too large for the headset and can cause for uneven weight distribution. You are more than welcome to try to design your own 3D printed from face plate for your iPhone 7+ though! Send us pictures when you get it working!
Please have a look at the bottom of the following page to download a CAD Starter Pack for our Structure Sensor Brackets: https://structure.io/developers. Though the CAD files in that download aren't for the Bridge Headset, they may provide useful information when designing your faceplate.
With each announcement from Apple, we will begin exploring how to make the Bridge Headset compatible with each of Apple's newest iPhone models. However, we are unable to complete the testing process or give concrete answers on product compatibility until we have the newest model in our hands for testing.
The full process usually takes a few months after the product is physically released for purchase.
Here on our community forum is the best place to find any announcements regarding new product availability.