Don't sob into your battered copy of K&R though, the shift will move slowly.

Linus Torvalds is happy to tell you that Linux release numbers aren't a big deal. 

As the Linux supremo said of the 6.0 release: "Despite the major number change, there's nothing fundamentally different about this release – I've long eschewed the notion that major numbers are meaningful, and the only reason for a 'hierarchical' numbering system is to make the numbers easier to remember and distinguish."

With 6.1, however, there is something fundamentally different. For the first time in Linux's history, in addition to C, you'll be able to use another language, Rust, for kernel development.