There is a new wallet concept -
http://www.eliptibox.com/. First to talk about firewall on hardware and packed with features.
Can be interesting platform for developers.
Interesting concept, thanks for sharing. What does "fpga hardware firewall" means? Why do you need this if you do only offline signing? I don't assume that this wallet downloads the blockchain to let you view your transactions.
I also was wondering why a field programable gate array would be used as a firewall. Apparently it does download block headers and stores tx info on the device, so says their site.