A quick update to let folks know that production units of the 16-50 and 50-135 lenses have started to ship. My understanding is that first units will arrive in all markets in early August. While I can't comment on the actual number of units being shipped, based on our "current" back order status here in the US, it looks like we will not fill all back-orders until the end of September. Please note that this estimate is not 100% accurate, as I have no way of knowing if the "current" orders from dealers reflects the true demand for these lenses. In any case, this is good news. I told my friends in Japan that if we didn't start shipping the lenses soon, we'd have to change the definition of SDM to "Some Day Maybe" (smile).