https://groups.yahoo.com/neo/groups/QuadtoneRIP/conversations/messages/12891
As far as curves support, it's anyone's guess as to whether the 3880 K3 OEM QTR curves will work well for the P800. You'd expect that some adjustment would be needed, as the big change is the new SureColor inkset with its higher dmax, but that's just idle speculation on my part.