iPhone, Android, the Weak Sisters and a Dead Parrot : A Battle for the Hearts and Minds of Developers.

"Looking at Day’s analysis, he predicts a world of $15 billion worth of mobile applications being sold per year by 2014, with about $12 billion unevenly split between Apple, taking the lions share, and Android, with a still reasonable $3.6 billion take.

The rest, essentially scraps, to be split between the others. One of the real shocks is that Symbian, once the undisputed heavyweight champion of the smartphone universe, is relegated to 5th place behind Apple, Android, RIM and Windows Phone."