Edit: changes to remove "Early" from the post title & the book reference.
This thread on the bogleheads forum announces the availability of the Boglehead's Guide to Retirement Planning
Bogleheads :: View topic - The Bogleheads' Guide to Retirement Planning IS HERE!
You can preview a lot of the book at Google Books
My thoughts on reading the preview. (Please note: I have NOT read the entire book)
a. If you're new to ER planning, this is probably a very useful book.
b. If you've done a lot of ER reading to date, its probably a repeat of what you know. This is not an indictment of the book, but something to be expected. There's only so much on the topic out there, and this forum actively looks for it on a daily basis.
Two chapters of great interest to me were the Withdrawal Strategies and Early Retirement. I didn't find much of use in the former, and the latter had a large block of pages missing in the preview, so I can't say much about it.