I can't believe how busy it's been on the book front recently.
We have a new site live for it: http://bit.ly/a7H67J and Martijn and I have recently been looking at some possible cover designs (will post as soon as they're finalized and we can share).
There's also been a slight title change - we're now working on "The Well-Grounded Java Developer" (with "Covers Java 7" as the subtitle). The reason for that is we want to emphasize that the book is about more than just the Java 7 syntax changes - we're talking about a lot of the other shifts in the Java landscape, about multi-language, and lots of other things.
The links to our first "Green Paper" and other new content should go live soon, and after that - Early Access. It's all quite exciting.