What started of as a very hazy concept about a year ago, now became something very concrete.
Our PowerCLI book will be released from the Sybex warehouses on March 28th.
About a week later you should see it appearing in a store near you ;-).
We set up a dedicated website at http://powerclibook.com.
For now that site is read-only, but we will open up the forum soon, so you will be able to leave comments and ask questions concerning the book.
Small hint, on that site you will also find a number of links to pre-order the book!