Linux Kernel 4.7 Reaches End of Life, Users Urged To Move To Linux 4.8 (softpedia.com)
prisoninmate writes: The Linux 4.7 kernel branch officially reached end of life, and it has already been marked as EOL on the kernel.org website, which means that the Linux kernel 4.7.10 maintenance update is the last one that will be released for this branch. It also means that you need to either update your system to the Linux 4.7.10 kernel release or move to a more recent kernel branch, such as Linux 4.8. In related news, Linux kernel 4.8.4 is now the latest stable and most advanced kernel version, which is already available for users of the Solus and Arch Linux operating systems, and it's coming soon to other GNU/Linux distributions powered by a kernel from the Linux 4.8 series. Users are urged to update their systems as soon as possible.
Seeing as RedHat 6.4 uses the 2.6 kernel and is supported until Nov 2020 there will be lots of 2.6 for some time yet. Then there will be extended support as well for those willing to pay for it.