WHY CentOS still using qemu-kvm 0.12?

What I am need is high version of qemu-kvm for CentOS, but seems like they do not officially provide newest qemu, only qemu 0.12 source code with 3522 patched rpm package.

Is there any reasonable to keep low version for qemu-kvm ? or what should I do if I need newest qemu-kvm rpm package? 

✉ --
朴元奎
kerwin