If I remember correctly, some people were going to get to see the movie a week before the public so given we're essentially 7 days out, I'd expect the spoilers to start coming soon.
There was an interview on Good Morning America IIRC with Eisenberg - had a brief scene as well but the interviewer mentioned she'd seen it but had to sign an NDA (non disclosure agreement). Edit: found it.
Also, I don't really get the people who reckon the trailer has given too much away. Avengers and Ultron, MoS and probably most of the other Marvel flicks (even TDK and TDKR) showed villains in their trailers. If you were realistic, surely no one actually expected Batman or Superman to fight until one was completely beaten and then the movie would end? The hint is in the title, that they would come together to lay the foundations for the JL film. Only way they team up is if a greater threat showed up - and by fighting first, they probably develop a respect for each other too.
I'm just super keen to see so many characters brought to life for the first time on the big screen. Plus, there will surely be a lot of reveals and easter eggs they haven't shown. 7 days to go...hurry up already!!