After the recent announcements from Unity at Unite 2013 we are considering to drop Unity 3.5. We don't believe that anyone would keep working with a 3.5 version any longer.
All our future upgrades will be released with the latest version of Unity only. In case you have a special need to keep supporting 3.5 please do open a support ticket to have a specialized package created for you.
Pino - DFT Games' owner