The new Apple TV will come at a premium price compared with the current model, which was originally priced at $99 from its launch in 2012, then was reduced to $69 this March. As the new box will be considerably more expensive than popular alternatives from Roku, Google and Amazon, Apple plans to keep the $69 third-generation device for sale as an entry level model within the Apple TV product line. The new Apple TV 4 will be very similar to the current model in appearance, but it will be thicker and slightly wider, sources say.
Source: Apple TV 4 coming in October for under $200, Apple TV 3 stays & gets new streaming service | 9to5Mac