Some HTML5 slides on the bleeding edge of HTML5 : Here
Very motivational :D . Some of them are already here in alpha like gamepad, and others are going to make HTML5 gaming and of course, C2 much better! Examples are, mouse locking , much better canvas pixel manipulation performance (Canvas plugin much faster), even better sound support, better input etc. Great times to come. Only thing missing is getting all of these on mobile too :)