In the near future, Symbian's market share will surely drop some more. Nokia CEO Stephen Elop announced radical changes with his "Burning Platform" memo several days ago, and a recent tweet by Google's Vic Gundotra (claiming that "two turkeys do not make an eagle") fuel speculation that Nokia is about to embrace Microsoft's mobile platform, Windows Phone 7.
With 4.2% market share in 2010, Microsoft is still tiny compared to its competitors, but with Nokia on its side, it might become a formidable player in the smartphone market. However (and if Nokia really plans to team up with Microsoft and switch to Windows Phone 7), many questions remain unanswered. For a huge company such as Nokia switching to yet another smartphone platform will likely be a painful process, and it might take months or even years before we see the results of Nokia's change in strategy.
One thing is certain: the table above will change dramatically by the end of 2011.