Libra is a new keyboard accessory for the iPad Pro 2018. Its maker, Sentis, claims that its leverages this tablet's new OS into enhanced functionality and convenience while using both devices. It is available as a reward on its Kickstarter campaign.
https://www.notebookcheck.net/Sentis-claims-that-its-new-crowdfunded-keyboard-attachment-turns-an-iPad-Pro-into-a-MacBook.435272.0.html