Short and simplistic version:
Fayerwayer: "Linux world freezes, Red Hat will incorporate its 'CentOS' clone as its own."
Linux Magazine: "Red Hat and CentOS Bury the Ax of War and Decide to Work Together."
Linuxera farandula magazine that does not exist: «The intimate photos of RedHat and CentOS and Fedora's jealous reaction. "
My opinion: RedHat «buys» CentOS and it will make it a Fedora for servers, without ceasing to be free.
Large version:
RedHat: We are joining forces with CentOS to build a new CentOS, capable of leading towards the development and adoption of next generation open source technologies. This collaboration reinforces Red Hat's proven business model by extending its open source development ecosystem. Red Hat anticipates that taking the role of catalyst within the CentOS community will allow it to accelerate the development of enterprise-grade subscription solutions for customers and partners, such as Red Hat Enterprise Linux, RHEL OpenStack Platform, RH Cloud Infrastructure, RHE Virtualization, RH JBoss Middleware, OpenShift by Red Hat, and RH Storage.
CentOS: Together with this alliance with RedHat, we released a new web page y a new political organization of the project. There will be a governing team of 8-11 who will take responsibility for the vision of the project (now there are 9, 3 from Red Hat and 6 from the CentOS community) and special interest teams that are responsible for building the system, adding and maintain functionalities, etc.
We also want to clarify what things change and what does not: It does not change the CentOS platform, nor the bug handling system nor the independence between CentOS and RHEL, much less the free CentOS. What does happen is that some members of CentOS will also work on Red Hat (not RHEL) and that Red Hat will offer support to implement Red Hat solutions on CentOS. He even proposes to create variants CentOS specialists for each of those solutions.
For more information, this other site: http://community.redhat.com/centos-faq/