Originally Posted by Haber_Nir
i think the reason is that there is no support for kernel 3.1 and they have to move to kernel 3.2.
When a kernel is no longer supported at kernel.org, the burden for bug fixes and security fixes then moves to distribution developers. The Fedora kernel packagers will then have to decide whether they want to maintain it themselves, or move to a version supported upstream.
In some cases, there will be some critical bugs and they might consider upgrading even though upstream still supports it, such as F14:
"Going forward, we're at sort of an impasse. The two most likely options
are staying on 2.6.35.x, or moving to 2.6.40 as F15 did. We know that
there are areas where 2.6.35.x is just broken or insufficient (USB 3
support, various suspend/resume issues) that might be improved in 2.6.40
but that comes with the risk of hitting userspace interaction bugs.
We're keeping an eye on this and trying to come up with the best all
around decision, but it is not an easy choice."