GlowWorm sends words that he has found an information about the upcoming release of the WHQL certified detonator 50.xx series.

Bill Rehbock (NVIDIA's Director of Developer Relations) told Bjorn3d in an interview:19. Ok, since I get completely bombarded regarding this: Can you give any info about the upcoming Detonator 50 drivers? ... People are really missing newer WHQL drivers from NVIDIA.

NV: Good timing; I'm happy to say that we are planning on a driver release later this week. Read the complete interview by clicking the above shown link.