It's going to be interesting to see how the leak of the slim affects the charts. It will be a fight between those who are waiting for a price drop and those that don't like the design of the new slim and will want the older model. Who will win? FIGHT!
I'm going for a 'decline' in PS4 sales, although it's not out of the question the PS4 could see a surge before the slim launches.
The PS5 Exists.