The big news here is that you now need a premium subscription to use any of Spotify's APIs. This means that if you wish to use Spotify's APIs to more easily share music with others, you must have a premium subscription.

What's gross to me is the language:

> all newly created Development Mode Client IDs will be created under the updated Development Mode rules and will have the following restrictions applied by default > Development Mode use will require a Spotify Premium account

The language acts as if it's possible to have some sort of non-development mode application. If you look further, you'll see that a non-development mode application must be owned by an organization with more than 250k users.

Spotify have absolutely gutted API access over the last few years. Similar to all these huge companies that used to offer great API experiences.