That will only happen after the big whales have accumulated enough. It might not be ready in December.
There would be no news hence whales do appear on random ways and the price increase will surely be visible for all and that means the whales have just bought zcash but i think it wont happen on this upcoming december but well who knows on what will happen on zcash, price drops drastically since on the beggining.
I think the pumper will wait until the Z address is implemented properly, then they will pump the coins a lot.
you can never predict the pumps and surely after some new feature is realeased to an altcoin there is automatically a hype going on with that particular altcoin which can help the price rise.
if the pumpers were ready (had accumulated enough and are not pumping other coins at that moment) they will use this to pump it otherwise not gonna happen!
I do not think they are ready yet. They do not have many coins now as the issue of coin is half as normal.