The newest one is September's Snapdragon 8cx Gen 2 5G, which can barely be considered a new chipset, as it's such a minor change from the two-year-old Snapdragon 8cx. In 2019, the Snapdragon 7c ...

So when the Snapdragon 8cx Gen 2 was introduced last September, it was a bit disappointing to Windows on ARM fans, as it was just an overclocked Snapdragon 8cx, similar to Microsoft's SQ1 processor.