I know about it because I'm already signed up and have an account. SoundCloud has provided nothing in the way of notification, tools, or access to a similar platform. Sure, they're getting in better position with the RIAA/Merlin groups but that's not traditionally the value proposition with SoundCloud for listeners/creators. Maybe in time we'll learn more about why SoundCloud and Dubset both have competing systems for license revenue (apparently?!), and which one might be the better of the two.