i dont think porn is going to change much, of course there will be more hardcore titles, but the content wont be much more hardcore than they are now. just a wider selection to choose from, what can porn do that it hasnt already? look at some international porn, eating shit and piss or sex with eels, pigs and furry animals doesnt really appeal to most viewers. how about sex while having a period? i dont think so...
I think there will be a time when some company will try to do rough porn and either get some activists to lobby some new bill to tame it down, or have some starlet get violated/hurt and sue for big money scaring off other companies of the same genre and cause more political delema.

Portable porn is a thing of the future, already been seen on palm OS, cell phones and other gagets. in the future it will be used more because of the increase of picture quality, lower prices of gagets and thier screen sizes. these devices wont easily play dvd, so downloadable porn will be in demand.