In the update to the app, Apple will now allow users to schedule repairs with authorized service providers, who are basically third-party repair shops that have been authorized by Apple to make repairs on their devices. Prior to this scheduling with authorized service providers wasn’t possible, but the update to the app will now let users do just that.
What this means is that if you stay near to an authorized service provider you can schedule an appointment with them instead of going to an Apple Store. It can also act as an alternative for users who are in a rush to get something repaired by the Apple Stores are too busy to slot you in.
This change to the Apple Support app brings it in line with the web version which has already allowed this scheduling feature, but if you use the app more often then no doubt this will come in the handy for the future.