Survey: 75% of game developers using or planning to use HTML5
GameZebo has details about a survey by Evans Data did of 1200 developers worldwide:
Conducted by Evans Data, the survey questioned 1200 developers worldwide at the end of last year, and found that 43 percent of those in North America were already using HTML5, as were 39 percent of developers in Europe, the Middle East, and Africa and 58 percent in Asia-Pacific.
via http://www.gamezebo.com/news/2012/01/17/survey-75-game-developers-using-or-planning-use-html5