http://www.davesmithinstruments.com/support/rev2-0.html
This update is a minor/major version since it has improved the cc's so that it can be controled better via midi controller. The only downside is you have to install a new IC which cost 25$ from DSI. You can do it yourself or send your Evolver to them and they will do it for the same price. I have not done that yet since I am short of funds but in the meantime the new patch banks can be uploaded to you Evolver and they will work.
Just thought I would let all the Evolver Fanatics know.