The phrase "E3 is dead. Long live E3." comes to mind. As the articles stated, there will probably be a new mini-E3. In addition, publishers will probably continue to seek out events (PAX, ComiCon, TGS, EGC, etc) to hype their products in this new vacuum. Or you might see more companies do what Nintendo and Sony have been succesful at with their traveling road shows.
I will admit that I've cared less and less about E3 in the past few years. So much of the stuff gets leaked beforehand that you never get those "bombshell" moments that used to happen. Half the stuff on display is BS, and everybody just admits it with a nudge and a wink. Plus, I don't need gaming sites doing reports every 5 minutes with the latest blurry shots of some Namco poster or booth babe. I'd much rather see a setup where everybody gets their own keynote time followed by some pre-arranged "hands on" times.