Yeah, just read the 4 rebirth issues:
From best to worst:
1. Green Arrow: I was suprised just how good this issue was. Ollie as self described SJW fits his character perfectly, and the stuff with Dinah was a lot of fun. I loved them calling each other out on their bullshit, and the story was perfectly paced for a 20 page comic. One of the best single issue stores I have read in a long time.
2. Batman: Not amazing, but still pretty good, the art was great, but I am a little unsure if I like the whole re-imagining of Calendar man, though it was pretty creepy. I don't know much about Duke, as I haven't read We Are Robin, but I'm willing to give him a shot. Glad he isn't Robin though, Damien needs to stay in that role.
3. Superman: Not a lot happened, but it did have some cool stuff. I really wish he would have worn the suit by the end. I also wanted to see more of his family. I could have sworn that Supes had already died to Doomsday in the Nu52 though, though I guess that reference was made early on.
4. Green Lanterns: Not a lot happened either, but it was a decent introduction to the characters. I knew nothing about Baz, and I liked Jessica going in, and the book set up an interesting dynamic. I did think it was odd that Hal did what he did though, it seems super dangerous and limiting in case something happens.
Overall happy with the books. But GA was the big surprise.