Following up my previous post.
I'm not trying to veer you away from buying an Xbox One S.
Skip to the last paragraph.
Xbox Timeline for those who aren't familiar.
1st Gen
-Xbox (2001): 480p, Rivaled PS2, Halo made it popular, introduced online gaming for console
2nd Gen
-Xbox 360 (2006): Introduced HD (720p, 30fps) for the first time in consoles, built around Xbox Live
-Xbox 360 Slim (2010): Shrank the 360 and fixed thermals that caused Red Ring of Death, Kinect
3rd Gen
-Xbox One (2013): 1080p, 30fps, Kinect 2
-Xbox One S (2016): 1080p, 30fps, HDR, Plays 4K Video Streaming and 4K BluRays, Ditched Kinect
-Xbox One X (2017): 4K, 30-60fps, HDR, Plays 4K Video Streaming and 4K BluRays
-Xbox One S All Digital (2019): 1080p, 30fps, HDR, Plays 4K Video Streaming, No Disc Drive, Cheaper
4th Gen
-Xbox Scarlett (2020): 4K, 60-120fps, HDR, Ray Tracing, Plays 8K Video Streaming and maybe 8K discs
-Xbox Something Something (2023): 8K, 30-60fps... Microsoft Plans to iterate the Xbox every 3 years
When Microsoft built the Xbox One they had to change the chip architecture and they made it resemble a PC. This was so that it made it easier for Developers to convert PC games to Xbox and Xbox games to PC and ran some form of Windows 10 to make apps Universal which failed. Making the Xbox like a PC allows for future backwards compatibility and cross saves between Xbox and PC. In the past it was difficult to make old games work on new consoles because chips were always custom built. Some consoles emulated old games but it was difficult to get all of them to work. When you look at PC games, you can still play 32bit games that ran on Windows XP today.
The reason why I'm saying all of this is because the Xbox One S will be around for awhile as a starter budget console. New games that come out to Project Scarlett will work on the S but not amazingly great. There will be a point where developers of AAA games will decide not to have their game run on the S, but that could be in a few years. Cloud gaming is around the corner with Project XCloud and I have no doubt Microsoft will allow owners of the Xbox One S to pay an extra monthly price to stream their games from a remote Scarlett console and get 4K graphics with 60fps as long as they have an internet connection.