When Paul starting talking about Microsofts vision for data a while back one of the key pillars was built around the next evolution of data programmability, however there was not much info at the time. We've now released these 2 whitepapers that discuss what is coming in the future and specifically what is coming with respect to entities. There is some really cool stuff in here that will change the lives of people developing data centric applications(for the good). In addition Channel9 has a video of Anders and Sam(who leads the Data Programmability Team) talking about some of this.
Oh and there is a new team blogs as well now, here; http://blogs.msdn.com/data