Lenovo keeps doing their quiet tablet upgrades. This time around it’s on the Windows tablet Lenovo IdeaPad Duet 5i that was launched in the US in August last year. There’s only one upgrade on the Lenovo IdeaPad Duet 5 2023 model (model nr 12IRU8). These are upgrades from the 12th gen Intel Core processors to the new 13th gen Intel Core i7-1355U, i5-1335U, and i3-1315U processor options. But other than … more…