There are no plans for an emulator at this time. Maybe you need a second box for you office?
We will continue to look for ways to simplify development, but one of the issues with an emulator is that a PC does not include the secure key storage hardware that the Roku box does. So many of the security features cannot be emulated.
We are looking at simplifying the experience of interfacing with the Roku DVP for development. Any opinions on an eclipse or visual studio plugin?