I remember as a child reading various gaming magazines, but I never touched the news section. Didn't interest me as a child. Still doesn't really, I'm not that interested in quotes saying that games may come out, and don't like to base games on what is heard.
I agree with you to an extent. Whilst PR could give out a better overview of videogames, a lot of what is supposedly news can be just rumors like you said.
What I think though is that every form of news has had to adapt for the availability of the internet, not just gaming. Nowadays, BBC news pages are made almost by the hour on various subjects. As the technological stance suddenly becomes worldwide and news is available to be created, adapted and edited in a manner of minutes instead of having to wait for a week, things like the news need to adapt with it, and become more regular. The only difference between videogames and other forms of entertainment is that videogames decided to adapt all of a sudden and therefore needed news and therefore, decided to make news out of (Like you said) quotes, photoshop, unconfirmed screenshots and rumors.
Whether or not it is better or worse though, for now that is open to opinion. It will take a few years before we can see if it was worth it, if videogame news doesn't just stay theories and actually become something more.