http://naruto.wikia.com/wiki/Naruto_HidenIn case folks were unaware, there have been and will be more releases of Naruto-based content that delves into the lives of several characters after the series ends. Presumably, the Akatsuki based one will probably be more retrospective and give more depth to Akatsuki characters that were never really explored much in the series.
The wikia pages of some of the novels that have already came out does have a summary of if not the entire plot lain out, so read those in full at your own risk of spoilers!
In particular interest to me was of course the Shikamaru Hiden one, since on the wikia it gives some intriguing details regarding it. Yet, I have yet to find an English version of it on the internet. X_x
* The interesting detail is that when Shikamaru walked into a dark, closed off room with the book's antagonist, Gengo, he didn't use shadow imitation against him until the subsequent arrival of his comrades, who opened a door and let in some light. I'm trying to find more details about the room in question, since shadow imitation usage in such a situation has come up at least twice in decisive fights that I have had with folks, one of which was a biju battle.
I'm ready for the told-you-so, but I'm still going to be on the lookout.