I would have preferred it if they didn't official announce it yet.
It's probably a good 3 years away, at least. But now that they announced it they'll have to keep showing things every couple of months. You can't afford long radio silence periods with things like that. However, it's ES6... heh. I'm not sure if any amount of media hiatus in between reveals and announcements would actually affect it in any way. Still, I think that it would have been MUCH better if they announced it exactly the way they did for Fallout 4. Let's say... we hear nothing about it until one year at E3... say 2021 or something, they come on stage and say "Oh btw, here is this new game we've been working on" * BOOM * it's ES6, they go "Oh also, here's the first 15 minutes of the game" * people faint in the crowd * and finally "Oh and here's the release date" * comes out just a few months later the same year. Now, THAT, would have been absolutely epic.
I'm not going to hide the fact that I was very, extremely surprised (pleasantly so) when at the very end they showed the 'tease'. I had a smile on my face and thought "You m-fkers, you're really doing it; I love you". But the thing is, it was not a state secret or anything. We ALL knew that ES6 would happen, and most of us assumed that at the very least they started to work on it already. I WOULD have preferred it if they did have something to show about it. But it was basically just an official announcement. It felt more like "Ok ok, yes, here it is; now please shut up about it already we're on it, see you again in 4 years." It's satisfying to know they're officially on it sure. But... now I know I'm going to have to wait a couple of years with very little to talk about in between. If there IS something I really dislike is whenever developers announce a game literally years before it's ever going to be ready. The intent might be to "build up hype", it's a classic but that one just doesn't work with me anymore (it worked back when I was in my teens, but that was... some time ago).
Unless they pull up something completely unexpected during E3 at their booth and have more to show (or to say)... but that, I definitely think is not gonna happen.