Neo Technology humorously announced a fictional product, "Neo 4 Java," on April Fool's Day, claiming it enhances database development speed and scalability, while playfully attributing its origins to a coffee-stained napkin sketch by Emil Eifrem. The announcement details the supposed performance benefits of "Neo 4 Java," such as improved read and write scalability, native storage and processing, and an easy learning curve, emphasized with exaggerated claims and satirical comments about its addictive nature and transformative effects on users. Despite the playful narrative, the announcement serves as an April Fool's joke, blending whimsy with elements of graph database technology.