On a more technical front, we're told the PDK supports the Linux standard SDL (Simple DirectMedia Layer) to ease in porting and development (Unreal for Linux runs using SDL, for instance), and that developers could even build apps like an audio processor that rely on PDK components but don't show up in the UI at all, or OpenGL-empowered things that aren't necessarily games or in 3D.
It features a simple interface and the physical key requirement provides an additional layer of security that avoids using a vendor's redirection service such as those offered by Cloud Engines for PogoPlug or Axentra for Netgear's Stora.