That's an optimistic goal. The iPad's market share has been reduced but is still over 60%.

>There is a chance that Windows tablets will have some impact. iPad's market share has declined a bit. Microsoft hopes to push it below 50% next year. http://news.cnet.com/8301-1035_3-57415697-94/microsoft-aims-to-make-ipad-an-underdog-with-windows-8/
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>>Portable and touch are the key. The iPad and other tablets have already taken off and the trend is only going to accelerate.