Rotten Tomatoes has their Day Two set report up, and they share lots of cool details. I was most excited to read about 1) improved 'more realistic' action effects and 2) RPattz's chest:

While the first Twilight film used plenty of wire work to achieve the look of vampires running/climbing with effortless ease (an effect criticized for a lack of weightiness and realism), wires here were being used in quite a different way. Stunt coordinator JJ Makaro, who paused for a moment to chat, said that the crew was making deliberate pains to make New Moon's action look more realistic.
"We have wire work, but we're really trying to not do a lot of it," he explained. "We don't want to get into the Hong Kong - floaty stuff that you see all the time, vampires hanging in the air and all of that. It's a tough call, because wires are wires, and the inherent problem with them is exactly that. They get floaty on you. So we're having a heck of a time trying to find the balance that gives us enough to make it supernatural without it being over the top."
Pattinson wore a dark burgundy hooded robe, his chest exposed. And yes, it was impeccably hairless and like alabaster, just as Meyer wrote it. Girls will swoon. Greene stood next to him, wearing a white and gray striped robe and red gloves. Stewart stood between them in black jeans, a short sleeved shirt, and sneakers.
Read the rest of the report at
Rotten Tomatoes.