Branches/Source Trees

There are several source trees, for example:

Long Term Support (LTS)
Super Long Term Support (SLTS): Maintained by the “Civil Infrastructure Platform”
-next bleeding edge. Patches are collected and tested here. Common upstream kernel contributor tree.
-rc Release candidates
Stable kernels: End user kernels
Distribution Kernels: Kernels provided by the distributions

How to check different kernel versions:

$ curl -L https://www.kernel.org/finger_banner

The latest stable version of the Linux kernel is:             6.2.1
The latest mainline version of the Linux kernel is:           6.2
The latest stable 6.2 version of the Linux kernel is:         6.2.1
The latest longterm 6.1 version of the Linux kernel is:       6.1.14
The latest longterm 5.15 version of the Linux kernel is:      5.15.96
The latest longterm 5.10 version of the Linux kernel is:      5.10.170
The latest longterm 5.4 version of the Linux kernel is:       5.4.233
The latest longterm 4.19 version of the Linux kernel is:      4.19.274
The latest longterm 4.14 version of the Linux kernel is:      4.14.307
The latest linux-next version of the Linux kernel is:         next-20230302