Doubt PS4 hits $199 this year. The 1TB model is replacing the 500GB model and will have received a "price cut" to $299.
http://www.mcvuk.com/news/read/1tb-ps4-slim-finally-arrives-in-the-us/0181457
Seems like Sony are going to wait on bundling a game with the 1TB and come this holiday the most I expect is another $249 deal. Can't hit rock bottom prices just yet!
Also the Pro will at most get down to $349 if Sony don't just bundle a game with it for the holidays.
Since we are at the period of time where console sales slow down (PS4 has been down YoY every month since June 2016) I don't see 2017 being any different. Now is when Sony will want to get as much profit as possible before needing to drop the price below $249 for a quick sales spike.
Early prediction, but I think PS4 will sell just below a combined 2.4M this holiday, with Switch selling around 2.5M.