I have NFI what will happen but I voted anyhow... just cause I can. I am guessing that at least from my point of view it will show a generaly brightening of the comet. At the moment it is nothing more that an almost averted vision blob... I am guessing that its core is hard with a softer crust and what we will see is the effects of a larger area of crust being blown off and a relatively small portion of core.
what amazes me is, just like the cassini mission, the engineering and such that goes into this sort of thing. I mean the cassini mission... it was launch 7 years (i think it was) before we got to see anything of use! so the batteries mechanics and electronics had to last 7 year of relative inactivity in space before it was used. and then this 7 year old technology had to work near flawlessly on call....