I'm curious to know if the 200-400/4 shown in Singapore recently was from the same pre-production batch as those test lenses that the London Olympic 2012 photogs was able to try out last August. What I mean is that the Olympic photographers apparently was very impressed with the lens' performance and capabilities already. Yet Canon chose to do the construction. Canon in Singapore is said to have shown up on the Canon EF 200-400 Experience days in January 2013, but it was when the "old" design?