It’s not a fully complete feature yet — it’s a “Technology Preview” so Adobe is still working on it, and still taking your feedback (in fact, they ask for it right on the proofing page, which I think is awesome). If you need to send images to a client (or friend) as proofs you’ll find this really helpful (well, more so when it’s fully functional). Here’s a quick overview of the new “Collaborative Proofing” technology preview where it’s at right now in the development phase. STEP ONE: You have to have synched a collection of images to...