Web Browser roadmap for HTML5 features? I've been watching the caniuse.com site for a while now, and at one extreme we have Firefox releasing a new browser once/week (okay, slight exaggeration), and at the other extreme the Android list of 2.1/2.2/2.3/3.0/4.0/4.1/4.2 never changes. There is still nothing in the "Near future" or "Farther future" rows.

There are a number of HTML5 technologies not implemented even in 4.2, and I'm wondering when there is a new version coming, and what we can expect it to support. (EDIT: I'm looking for links to official announcements, developer blogs, etc. or a confident "nobody knows"; not speculation.)

(E.g. http://caniuse.com/eventsource )

(BTW, the StackOverflow Android tag seemed to suggest this was the best place to ask this kind of question. But if another site is better please let me know.)
The default browser is being replaced by Chrome as of Android 4.1 for stock Android, so I doubt it will see any updates in the future.  If you want to use sites that have HTML5 features, you should install Chrome and use that (and by extension if you're targeting Android devices with a web app, you should be targeting Chrome).