Forum poster DHart has shared some great images, made with the new Panasonic Lumix 12-35mm f2.8 lens. I'm not sure how they got their hands on the lens. As of the day of writing (July 7, 2012), I have not seen it in stock anywhere.
(Click Here) to see all of DHart's images in this post on mu-43.com.
This post was part of my decision to go ahead and buy the lens. Now, as you may have seen, I've decided this isn't the lens for me.