The Harrow Vapor Ultralite just appeared on the scene in 2017:
Harrow released this in 2017. It appears to be a new version of their classic Harrow Vapor frame. From the product description:
How is it possible to improve your best selling racquet? You make it 5 grams lighter with the same unparalleled Vapor performance and playability. The Vapor Ultralite is the newest, lightest weapon in our line that will surely be an instant favorite.
Thanks to Linus for the heads up!