It's going to be open at 8 PM local (BR) - in 1 hour from now...
PRX Forsaken and KRU Axeddy are on the queue already: https://nest-pro-league.vercel.app
The NPL will have a stream as a clean feed for people to watch or do a kind of watch party.
More info (in English) here: https://twitter.com/ValorantPixels/status/1623419186931269632
And yes, it's like Pro City 10 Mans but only with LOCK IN players.