Recently the Debian developers and other stakeholders have been trying to decide between basing Debian 8.0 Jessie's Linux kernel on the 3.14 release, which is Greg KH's latest long-term stable kernel, or to use Linux 3.16. The benefit of Linux 3.16 is that it's intended to be used by Ubuntu 14.10 and thus will receive support from the Canonical/Ubuntu kernel team for the better part of two years after its October debut. Linux 3.16, of course, has many improvements, new drivers, and other hardware support improvements over Linux 3.14.
In the end, based upon the comments today by Ben Hutchings on the debian-kernel list, it looks like Debian Jessie will likely be using the newer, Linux 3.16 kernel. He wrote, "Based on the replies to this, I think 3.16 is now the clear winner. To avoid disruption to the installer, I think we should keep 3.14 in unstable until the next installer alpha/beta is out, and then move straight to 3.16."