Jobs reported $1,000M to developers in the lifetime of the app store in Jun '10, so that's for the first two years. (~$1,400M gross revenue)[1] Now asymco has that doubling to $2,000M in the following 7 months. It's possible, I suppose, but seems quite optimistic. I don't have the numbers in front of me, but I think it's safe to say that iOS installed base hasn't doubled in the last seven months. I think I recall iOS…
The CDMA iPhone will expand the market even more: think China.