Sparsity Technologies, creator of the DEX graph database, have released an implementation of the Blueprints interface. Blueprints you'll recall is a property model graph interface and is also part of the TinkerPop collection of graph database projects. What does this mean? Well at least for graph databases a common API is beginning to emerge. It marks not only a start towards standardization but also the elimination of vendor tie-in often times a deal breaker in product evaluation.
Check out additional documentation at the GitHub project: Dex Implementation