Neo4j 2.0 introduces a new construct called "labels" which allows users to define sets of nodes within the graph, enabling grouping and categorization of nodes. This feature provides a means of providing "hooks" in the graph that can be associated with an application's type system, making intentions obvious. Labels enable users to easily find all nodes belonging to a specific group or category, improving data organization and query performance. The new labels construct also introduces a CASE expression for mapping inputs to result values, expanding Cypher's capabilities. This milestone release is experimental, intended to solicit input from the community, with future updates planned for Neo4j 2.0.