Small Patch going live in less than 3 weeks? no way. They even say that not all of the Content will be on the PTR right from start. Your seriously over expecting this if you think .5 will be out in less than 3 weeks.
1 month and some weeks, at most. But definitely not 3.
My guess is almost surely before end of octomber, since they will have another investor report.
Better guess is end of september to boost their statistics.
To get the best mileage out of it, it needs to be at least 1 week available b4 the end of September, since it’ll get more traction that way… so 22, coincides with my guessed date.