Not sure. There seems to be a lot of info about it on Google searches.
As far as what we're doing, we usually can't implement any new coding standards until IE supports them. We have to wait for them to catch up or many of our customers are left out. That's the main reason why we don't have much HTML5 stuff currently. If this is coming, it's going to be a long while before you see it in any of our products.
For that reason, it's usually a long time before you start to see any new coding practices like this in anything. Unfortunately, IE holds everyone back, since their browser is still widely used and sorely outdated. Doesn't mean you can't learn about it, but it's actual usage won't be widely seen for a while after it comes out.
The difficult we do immediately, the impossible takes a little longer.
That's funny. My point is, there's always new stuff coming out - that doesn't mean you have to use it or even that you should. Even if it HTML5000 was released today, you couldn't even consider using it until at least the major browsers update to support it, then IE probably won't support it for 5 years so you'd have to work around that. You could start using it right away, but a lot of people won't be able to see your site.
Consider that CSS3 and HTML5 have been out for years, and we still can't use that to it's fullest. Most people still use HTML4 for everything, including us, because we know it works for everyone. We use a lot of CSS3, IE people complain that they can't get their site to look like the demo because even IE9 doesn't fully support it.
For as fast as web technology advances, the time it takes to implement changes in coding standards is a crawl. That aspect of it moves very, very slow. You're not going to have to worry about it for a long time.
The difficult we do immediately, the impossible takes a little longer.
I hear you man. Personally I've heard the term a few times over the past weeks, when you asked I googled and saw a few things that didn't have much info, I honestly don't know much about it or what it means for the future.
Even it's not related to what we do, we try to provide info if we can. You might find better info about it somewhere else, we're all pretty wrapped up on what's in front of us now. There are plenty of developer forums, HTML forums, programmer forums ECT - those types of places are probably filled with people that know more about it. I'm not trying to discourage you from asking questions here, just saying there might better answers about this topic elsewhere.
The difficult we do immediately, the impossible takes a little longer.