I admit I always loved the old E3 -- the gaudy spectacle of it all combined with a sneak peek at all the games I wouldn't otherwise get to play for months (years?) just tickled the fanboy in me to no end. So the new slimline E3 is not the same, though it looks like we may see some similar level of big info-filled presentations from the Big 3 console makers.
This year Sony is unveiling Killzone 2 right on top of the MS one, which strikes me as a bit combative even for our industry. http://www.neogaf.com/forum/showthread.php?t=166456
Maybe that sort of thing always happened in the past and I never noticed... this doesn't really impact those of us watching at home, of course. I'll be glued to Gamespot for E3 coverage like I was last year, and hopefully they won't disappoint.