"Greg Kroah-Hartman has announced plans to provide minor patches
and bug fixes only for the current Stable Series of the Linux
kernel. Selected older kernel versions will, in future, be
maintained as "Long-term" releases. The kernel developer said he
hopes that this approach will help the community and developers
focus on the current versions rather than waste their time with old
kernel versions. The Long-term kernels are to follow the same rules
as the Stable Series kernels.
"Kroah-Hartman writes that it's "back to our roots" time for the
Stable Series: In March 2005, the Stable kernels were originally
introduced with Linux 2.6.11 to fix minor bugs discovered after the
final release of a kernel version."