In West End they were discontinued around 2000. A special cover with some of the golden statues was made for the 10.th anniversary (1996), but this was merely attached outside the white cover. But in the early 2000's they enlarged the size and replaced the white cover with one of the golden angel. Later they've also had a 20.th anniversary with a bunch of red roses with the white mask on top, and another version I can't remember at the moment.
In Australia/the World Tour I think they mostly still use the white (I have one black-covered version, all the others are white).
In the US they made the Broadway "Longest running show" one the standard version for both Broadway and the US tour, I think this was in 2006 (but don't quote me on it...)
In Germany they also used the white brochures originally, in the Hamburg version, but it was replaced by a funkier one in app. 1995, with a gorgeous MOTN pic on the cover, and later with the boat scene. The ones from Stuttgart and Essen were black.