I'm sorry, but I do not think that a reissue of the Evolver will be done... Dave allready said that the P12 was that really...
I actually believe that the next thing might be something that will utilize the new SSM Rossum chips that we now saw in the Prophet X... maybe it could even be an update to the Prophet 12... a lot of people have been asking for something multitimbral for studio use... i've seen these requests a lot, so it might even be something in that direction, using the SSM chips maybe... I'm certain that anything that would need a high voicecount like a multitimbral synth would be using chips instead of solid state filters etc.
Actually, what i would like to see is something a bit different... there have been many complaints when it comes to the Tempest, and i really think that this is an area where DSI should update it to a more advanced machine... this is a machine that would also benefit from the two new technologies that's in the PX... the sample part, so that a Tempest 2 could finaly have user samples, and the new SSM filter for the voices... but also including digital FX which I missed a lot when I had the Tempest, so that you're free from fiddling about with external FX on individual outputs... A Tempest 2, with added user sample support, internal FX and SSM filters is certainly something I'd like to see next... preferably with an option to have either 8 or 16 voices like with the REV2.