Looks like Youtube is raising it's ad-free pricing, (and renaming it from Youtube Red to Youtube Premium) to fund the creation of more original content like it's current hit show Cobra Kai. They are also launching a new music service (that was already launched?) called Youtube Music, and will eventually replace the other music service (Google Play Music) that Google has also been running at the same time. Also somehow these two services overlap but have different pricing tiers.
If you're confused you aren't alone. This is a mess so convoluted it could ONLY come from Google. Jeez.