Showing the benefits of self-publishing (and who knows the curses of self-publishing), the first SharePoint 2013 book is already out in both printed and Kindle formats.

 

It's Using PowerShell with SharePoint 2013

 

by Steven Mann

 

(US Amazon: http://www.amazon.com/gp/product/1479252298/ref=as_li_tf_tl?ie=UTF8&tag=heme0f )

 

and what's more it's available from all the Amazon sites that I list (US, UK, Germany, France, Spain and Italy) with the strange exception of Amazon Canada.