CoH 3 "Multiplayer Test" planed before game released said David Littman (Vice President of Production) during the Q&A stream today:
https://www.twitch.tv/videos/1623173570?t=00h40m31s
It would be a public test. The goal for Relic are to show off the game and test their tech and servers and for players to give more feedbacks for the post launch updates.