Neo4J community edition DB size limit?
I contacted uk@neo4j.com to ask for clarification and the answer they gave is that:


  There is a limit on node count and relationship count of 34Bn each


and


  The 34bn limit doesn't apply to Neo4j Enterprise


The release announcement for 3.0 mentions a 34bn limit that no longer applies:


  Dynamic pointer compression expands Neo4j’s available address space as needed, making it possible to store graphs of any size. That’s right: no more 34 billion node limits! 


So my guess is that 'Dynamic pointer compression' is an Enterprise Edition feature.