Other than the FPGA, which the average person won't be programming, how is this different from other ARM-based dev boards with unlocked boot loader? Some software and hardware security info from a variety of perspectives:

Rants on community: http://igurublog.wordpress.com/2014/02/17/biography-of-a-cyp... & http://igurublog.wordpress.com/2014/04/03/tso-and-linus-and-...

Rant on Linux systemd: https://lkml.org/lkml/2014/8/12/459

Desktop security alternatives: http://theinvisiblethings.blogspot.com/2012/09/how-is-qubes-...

Designing open crypto hardware: http://wiki.cryptech.is/