Bomber B was a German military aircraft design competition dating to just before the start of World War II to develop a second-generation high-speed bomber that would both be a direct successor to the Schnellbomber design philosophy, and to replace all medium and heavy bombers then in service or intended to be in service with the Luftwaffe. The Reich Air Ministry was so hopeful about the outcome that more modest projects were generally cancelled outright, so when the project eventually failed to deliver a working design, the Luftwaffe was left with hopelessly outdated aircraft.
Read more about Bomber B: Background, The Schnellbomber Concept, The Bomber B Project, The End of The Project