Two upcoming book releases that might interest you:

The Bounty Hunter Code: From the Files of Boba Fett

In the vein of Book of Sith: Secrets from the Dark Side (highly recommended) this book looks to do for you Mandalorian-lovers what Book of Sith did for us Sith fans. Due out at the end of October.

Maul: Lockdown

Mixed feelings on this one. This is from the author who did Red Harvest and Death Troopers. I read both because I like the idea of intentionally melding the Star Wars and Horror genres. The story concepts were compelling, but I didn't care for the execution. Schreiber's writing is adequate but nothing that really gets me going. That said, the premise for Lockdown does look good and Schreiber once again draws my attention. This one comes out January, 2014.