For the first time, Apple allows the integration of a third-party music service with its HomePod and HomePod mini. The first app to get said support is Pandora, which, unfortunately, isn't available here. An update to Pandora's iOS app will let users connect it to the HomePod. With a few simple taps, they can give the app permission to work with the speaker. So, they can ask Siri to play stations from Pandora directly on the speaker. Before, AirPlay 2 was needed to send audio from the app to the HomePod.
Now, users can even set Pandora as your default music service in the iOS Home app. Amazon Music was another app that Apple teased could work with the Apple smart speakers. So, that's something we might be able to take advantage of. Engadget writes that developers could integrate this feature into their apps. So, even with Spotify's history with Apple, there's a possibility Spotify can implement this feature.