LipeJJ said:

There will probably be playable demos for the crowd at E3... but I think E3 just opens to the general public on 15th; so they'll probably broadcast that gameplay on 14th and the day after people will be able to play it or a different section.

Didn't they already confirm that the only playable game would be Zelda?

...either way, playable demos don't make up for it. At least 90% of the E3 audience is people watching it online, they don't want playable demos on the floor, they want news and trailers and stuff.