The Linux 3.8.11 kernel is end of life and no longer be maintained upstream. We should switch to a newer kernel such as Linux 3.10.7 or later.
As the normal part of the Yocto development process, we uprev the kernel and reference BSPs. No need for a defect to trigger this work, it's been well underway for a long time now. linux-yocto-dev always chases the latest mainline, and the released versions are our stable base. Yocto 1.5 will be updated to the LTSI 3.10 kernel in the next week or so, and linux-yocto-dev will follow the 3.11+