From one of my fave sites TechCrunch.com
"There will be one billion HTML5-capable phones sold in 2013, according to new research from Strategy Analytics. The number represents a (huge, huge) increase from the 336 million units sold in 2011. As expected, much of the growth will be driven by sales in North America, Europe and Asia, as well as support from vendors like Apple, Adobe, Google and Microsoft."
http://techcrunch.com/2011/12/07/forecast-1-billion-html5-phones-by-2013/