As many, many of you have pointed out, there's some info on C-3PO in the latest update at StarWars.Com. It is within a comment from Ben Burtt on the first day of filming:

Editor Ben Burtt: "The thrill for me today was seeing C-3PO reborn. I got to put the faceplate on Anthony Daniels. The character suddenly came alive."

So yes, that does mean that we'll see C-3PO with his gold exterior in Episode II. How or where in the storyline this takes place remains to be seen.