Hombu has put up some info about the newly published book
"Hajimeyou! Shorinji Kempo" [はじめよう!少林寺拳法]
You can find some info (only Japanese) about it here.
Here is a picture of the cover

and here is information in English on Japanese Amazon.
The book has 175 pages and very nice colour pictures of most hokei up to shodan. There is also some explanations of basic techniques. Although the book is in Japanese only it can be of interest for kenshi that don't read Japanese, the pictures are clear and easy to understand.
The book can be ordered from Amazon (see link above) or from Hombu through your shibu-cho.