is there anything known of some snnouncements at NAB? Maybe the 70d ?
The best source is to read the CR front page. www.canonrumors.com
There were two pre-NAB announcements made yesterday.
However, the 70D would not be a product to introduce at NAB. Canon does announce equipment and products aimed at the Television Broadcast industry at NAB, they usually makes the 1D X look cheap. We're talking $45,000 $45,000 and up lenses, for example.