None at all Psychotic... Nintendo is one of the few that dont do that... just like they dont 'doctor' their screenshots, where as MS and Sony do...

IGN just posted an article like this for each system. XD

Even so, there are plenty of reasons to wait... probably the best being...
Wait till you see ALL of them, before you make a desision.

As for people like me, that aren't that interested in great graphics anymore, as much as gameplay... Well, lets just say, the Revolution interests me so much, it might just be the first console that I EVER preorder! ^_~ (situation depending of course, but I'm sure I might preorder it, closer to launch.) I've never done that before... XD I always waited to see what kind of bugs would appear and what fans would say and such... lol