Zeus, a member at WebmasterWorld, is known by the members there as the guy who watches over Google Image Search. Whenever there is a Google Image Search change, he is aware of it and lets the rest of us know.
Most recently, he is reporting that Google Image Search’s SafeSearch filter is getting a bit faster. In the past, it took three to six months for Google to update the images caught by their filter. Now, he said, it took less than two weeks. I am not sure if it is just a coincidence or something else, but this is what he said:
Has anyone else noticed Google updating the image index faster, in terms of those images being filtered by SafeSearch?
Forum discussion at WebmasterWorld.