At the Google IO conference this week, one of the many interesting announcements was the production of a game called Strike Fortress. This game is written entirely in JavaScript and looks like it used HTML5 all the way (Web Audio API, Web Sockets (with node.js), WebGL, etc.). The impressive thing is that it was written in 5 months by 11 students.
The game was sponsored by Electronic Arts but is more of a tech demo than a commercial game. You can read about it here: http://bits.blogs.nytimes.com/2012/06/27/e-a-and-google-got-game/. And you can see a video of the game in action at the blog of the guy who led the team here: http://noahbench.blogspot.com/2012/06/strike-fortress.htm.
At the moment, the game only runs in Chrome and only on Android 4.0 (Ice Cream Sandwich) and (I assume) on the new Google Nexus 7 tablet that was unveiled today (I'm a hardware person as well as software and I salivate at the idea of a 4-core Tegra tablet made by Asus ... and only $200).
Anyway, this can do a lot to convince people to look at HTML5 and help Construct 2 grow.