About voting:
rumored to premiere/broadcast on MNet in 2nd half of 2021
different selection method than in Produce series
no sms/text voting to prevent vote-rigging
on-site independent observers to make sure votes are count probably
global voting through app Universe created by NC Soft (big gaming company)
As for auditions 1st round is already off, they were contacting those who passed it until 5th march, and then second round was supposed to take place. We also know that FNC send Cherry Bullet there, and Mnet was considering will they allow them to participate in or not.
At fist it was for trainees born before 1st January 2006 (so those born in 2005 or older). But then surprisingly they extended 1st round of auditions for one week because so many '05 liners wanted to join show.
Trainees also didn't need to be Chinese, Japanese or Korean, but if they were from different country then they should have at least have some proper connections with agency in one of those three mentioned countries. So for example if Thai trainee from Chinese agency would like to apply then she could. If Vietnamise trainee from Korean agency would like to apply then she also could. Same for any other nationality. They also confirmed that girls living in USA but having Asian roots can apply.