3.4.4 is the latest stable release .
The current Linux kernel version is 3.9.
All versions of the Linux kernel are "full featured." The latest stable version of the Linux kernel as of May 17, 2011 is 2.6.38.6.
the latest stable version is 3.4.4
The current version of the Linux kernel is 4.14 (November 12), whereas the LTS kernel is at 4.9 (November 21).
The 2.4 version of the Linux kernel was released in 2001.
It is a kernel version that enables realtime.
there is no "linux operating system". linux is merely a kernel that operating systems can be built upon, of which there are dozens if not hundreds
There is no "Linux 4" or "Linux 9." I'm not sure where people get these numbers from. They could be reading the version numbers of a particular distro (such as Red Hat Enterprise Linux 4 or SUSE Linux Enterprise Server 9). However, the Linux kernel is developed centrally and then subsequently used by all of the distribution vendors. The current stable version of the Linux kernel is 2.6.30; the 2.6 kernel line is expected to continue indefinitely.
The Linux kernel is licensed under the GPL version 2.
if your kernel is out of date then you could be missing out on features that are available in the new kernel
Linus Torvalds
2.6.29.4