The biggest shift I see occurring on the internet is the technology it involves. We have internet that's fast by our standards now. 10 years ago dial-up was fast by our standards and current speeds would have been unimaginable. In another decade I suspect it'll be faster still. Waiting for a game to download? Psh. Hit the button, 10 seconds later, install.
That is, install if the remote hub idea doesn't completely remove installation processes in favour of "log on and play."
Frontier of the internet? I suspect that's going to be like "Frontier of science" really. There isn't one. There's the cutting edge which keeps getting sharper and occasionally someone invents a combined harvester which makes everything before it pale in comparison. Chances are that'll happen and a system better than The Internet will occur, as the internet has all but replaced other communication systems. Direct mental uplink? Who knows. This is pure speculation. It's equally likely that the Internet or it's later form continues as a sort of overlap infrastructure like phone lines and postal service because it performs a different function.
I've waffled on a fair bit here and I think I missed the point of one question. Will the internet be different? Yes. Or most likely anyway. I doubt that an absolute system for censorship and control will ever be introduced because the technological base is too open for people to learn how to get past them. And they will, it already happens here in Australia, in China, wherever. Technical know-how will likely become a prized commodity although the more widespread technology will lose some of the rarity value that shiny new stuff has.
There could be an upcoming era of online war actually. Pissed off net users going up against corporations and governments in an effort to "Free the net!" though it's more likely that they'll go for governments.
In all honesty, we'll see when it happens. If we're still alive.
As for the Escapist itself I hope that it's still running. It won't be the same as it is now, hopefully will be better yet though that'll be difficult in terms of the magazine side. New content, new writers and old alike. Chances are most of the users will have moved on though some may linger.
Forum content? I have no idea. Communities and online forums have a habit of cycling through stages ranging from pure concentrated awesome to washed-out crap. It's an arbitrary scale depending on the original measure of the site itself. As with the other's, we'll see when it happens if we bother to look or can. The whole internet changes too fast for any other approach. Predictions are naught but a rough guide, at best, and at worst wildly misleading.