Just wanted to clarify what I meant by "the field is still changing".
I think that Apple will not increase much further in smartphone market share because Steve Jobs is no longer leading the company. The last time that Steve left Apple things did not go well and the company nearly went under. I don't think Apple is headed downhill yet, but without the visionary man who made the company in the driver's seat, it will be run differently, and I believe, not for the better.
Android is constantly changing, partly because there are so many players, but also because Microsoft and Apple are applying pressure to most of the Android players through patent lawsuits and license agreements. I expect that Android will continue to hold significant market share because Google wants it to succeed and several of the OEMs have already had success with it.
With these two dynamics in play, the smartphone market is still changing.