I got a Hanlin V3 recently and it works very nice, but I am wondering if there are applications or if anybody is working with the SDK?
Anybody knows?

Thanks!

I got a Hanlin V3 recently and it works very nice, but I am wondering if there are applications or if anybody is working with the SDK?

It might be not what you want, but we (http://openinkpot.org/) are working on completely free firmware for v3. Currently main focus is on kernel and X server, but we will move our efforts to the applications soon.