Today Neo Technology released Milestone Release Neo4j 2.0.0-M01 of the Neo4j 2.0 series which will be generally available (GA) later in 2013. This release is the first time since the inception of Neo4j thirteen years ago that there is a change to the property graph model. Specifically, there is a new construct: labels. Neo4j 2.0 is an experimental release. This first milestone is intended to solicit  feedback.  If you are planning to go into production soon, we strongly recommend developing with Neo4j 1.9, which will be GA later this month.  More about Labels here.