Looks like the ability to live stream using YouTube's mobile app has been made more accessible. According to latest reports, the company has dropped the 1k subscriber limit altogether.
This means that now you can live stream even if you don't have a single subscriber. However, there are still a couple of requirements: the channel should be verified and should not have faced any live stream restrictions in the last 90 days.
The change has already started rolling out, although Google/YouTube is yet to officially confirm it.
I agree to some comments here. This will be troublesome. They will have to rethink again.
Already present in Galaxy devices since S6 edge/edge +.
I can see people abusing this live stream for something else. Then, Youtube may have to rethink again.