Did you know that 46 out of the top 50 Apps on both iOS and Android are now on the windows phone market place. You can check out this article for more information: http://news.cnet.com/8301-1035_3-57542103-94/windows-phone-8-users-can-access-46-of-top-50-apps/. The rate of developing windows phone apps now are 300/day. Everyone is trying to maintain the presence on the windows platform as the upcoming modern phone that the people will buy is actually windows phone 8. It will be provide by HTC, Samsung, Nokia and more. Since, I mentioned Nokia, you should know that Nokia sold 4.4 million Lumia smartphone in Q42012. You can read more on that here: http://thenextweb.com/insider/2013/01/10/nokia-sold-4-4-million-lumia-smartphones-in-solid-q4-2012-results-exceeded-expectations/.
Hope that this information helps you to visualize the potential for this phone and its up coming market place.