Why hasn't Linux version number moved beyond 2.6?

Question

Before 2.6 Linux moved up from 2.0 to 2.2 to 2.4 every few years. Why did it stop at 2.6?

Is the version number ever going to go beyond 2.6?

Answer 1

It is moving. It is just first two digits became irrelevant. From the Wiki:

Since 2004, after version 2.6.0 was released, the kernel developers held several discussions regarding the release and version scheme and ultimately Linus Torvalds and others decided that a much shorter release cycle would be beneficial. Since then, the version has been composed of three or four numbers. The first two numbers became largely irrelevant, and the third number is the actual version of the kernel. The fourth number accounts for bug and security fixes (only) to the kernel version.