Believe it or not, but Nokia has already started winding down support for their Symbian and Meego (now Tizen) operating systems as it goes all in for windows phone OS. This was bound to happen as MS is on the verge to purchase Nokia. Couple of years back, Nokia outsourced Symbian software development to Accenture, which has promised full support until 2016.
Starting January 1, 2014, Nokia will stop taking submissions and upgrades for the Symbian or Meego apps that are distributed through the Nokia store. In other words, developers will no longer be able to push new updates for their apps.
Nokia is now encouraging developers to shift to Asha and windows phone which are their main platforms for the company moving forward. We see this more as a formality as not too many people use Symbian or Meego phones.