WebRTC and asm.js have the potential to change how developers create web apps, so even if you usually ignore Firefox releases, this one is definitely worth a look.
WebRTC allows developers to create web apps with built-in video and audio calls, as well as file sharing without the need for any plugins or third-party software. Until now, however, only Google’s Chrome supported the budding standard in its mainstream browser releases. Now that Firefox also supports it in its stable branch, we will likely see a large number of startups and established companies examine this technology far closer.
You can test all of these new features with Mozilla’s BananaBread game demo, which uses WebGL, Emscripten, asm.js and WebRTC to “show how you can deliver high-end 3D multiplayer games while still maintaining a fast and stunning experience.”
Other small updates in version 22 include improved WebGL-rendering performance, a download progress bar in the Dock application window on Mac OS X and support for display-scaling options on high-res displays on Windows.
Source: Tech Crunch