[luigiwallo]

This graphic needs more context/metrics. Are these judgments made on past trends? Usage numbers? Something like how MacRumors buying guide averages out past release schedules to determine the next likely update:

http://buyersguide.macrumors.com/

[rjstelling]

I'm sourcing some stats to add this, but up-to-date reliable iOS stats are as easy to find as unicorn tears.