You'll find on the top right hand corner of your screen, the inbox icon:

By clicking on the icon you'll be taken to your inbox, which shows the following tabs:

This is where you'll receive news and updates about and even from artists you follow

Your favourite artists might want to reward you with exclusive offers, or send you a thank you message for your support, and this where you'll find those so keep an eye out for a little notification pop up on this icon ;)