Windows Phone to be No. 2 by 2015 - Update
IDC expects Nokia together with Microsoft to be the number two in 2015. Even bigger than Apple.
Update: Horace Dediu' comment:

A post from VentureBeat by Mikko Torikka has the whole story. Here is a part:
Update: Horace Dediu' comment:
@asymcoHorace Dediu
In 2010 Apple shipped 48m iPhones and 90m since start. IDC forecast: in 2015 192m Windows Phones will ship. Total 479m between now and then
A post from VentureBeat by Mikko Torikka has the whole story. Here is a part:
Thanks to a partnership with Nokia, Windows Phone 7 will be the number two smartphone operating system worldwide by 2015, predicts market research company IDC.
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The worldwide smartphone market is expected to grow 49.2% in 2011 as more consumers and enterprise users turn in their feature phones for smartphones with more advanced features. Smartphone vendors will ship more than 450 million smartphones in 2011 compared to the 303.4 million units in 2010, IDC predicts. The smartphone market will grow more than four times faster than the overall mobile phone market.
| 2011 Market Share | 2015 Market Share |
Android | 39.5% | 45.4% |
BlackBerry | 14.9% | 13.7% |
iOS | 15.7% | 15.3% |
Symbian | 20.9% | 0.2% |
Windows Phone 7 | 5.5% | 20.9% |
Others | 3.5% | 4.6% |