We finally have first books to learn more about our A7 A7r cameras! Here they are:
UPDATE: I completely forgot to mention the great book from Gary Friedman (Click here).
Sony A7 / A7R: From Snapshots to Great Shots at Amazon US (Click here). In Stock!
The Sony a7 and a7R: The Unofficial Quintessential Guide at Amazon US (Click here). To be released on July 1.
And now the writers have to hurry to write a book about the soon to be announced A7s too :)
All current Sony deals can be seen on that eBay page and on that Amazon page.