https://wccftech.com/apple-silicon-updated-every-18-months-new-m2-details/

The Apple Silicon family now comprises of a total of three chipsets, with the technology giant reportedly wanting to extend that range further with the launch of the M2, which is expected to arrive next year. According to the latest report, the company’s plan is to introduce a new iteration of custom chipsets every 18 months.

Fresh information published on Commercial Times and spotted by MacRumors talks about an 18-month upgrade cycle for the Apple Silicon. The M1 launched back in 2020, and shortly after, we were greeted by beefier versions of the chipset, called the M1 Pro and M1 Max. Both the M1 Pro and M1 Max featured larger die sizes, increased CPU core, and GPU core counts, but these were not regarded as the direct successor to the M1.