Without further ado, the following was found: Issue: And the Linux 6.x series? "Starting with Linux 2.6.0, the development model changed, and new system " "calls may appear in each Linux 2.6.x release. In this case, the exact " "version number where the system call appeared is shown. This convention " "continues with the Linux 3.x kernel series, which followed on from Linux " "2.6.39; and the Linux 4.x kernel series, which followed on from Linux 3.19; " "and the Linux 5.x kernel series, which followed on from Linux 4.20."
