By HIGHLIGHTS The device could be announced by the end of this year. The 13-inch variant is also rumoured to be powered by AMD Microsoft is reportedly working on two new Surface devices Microsoft is reportedly working on two new Surface devices, Surface Laptop 4 and Surface Pro 8. A report indicates that the Surface Laptop 4 could be powered by an AMD Ryzen CPU. In 2019, Microsoft had launched two versions of the Surface Laptop 3; One with a 13-inch display and the other with a 15-inch display. This is the first time the Redmond-based tech giant has used AMD CPUs for their Surface Laptop lineup with the modified versions of the AMD Ryzen 5 3500U.