The first beta tester invitations were sent out yesterday, so check the email you used for the beta pre-registration (Check your spam folders as well). The exact launch date will be announced later. The next batch of invitations is planned to be sent shortly after beta launch, so don't grab your pitchforks just yet even if you didn't get an invitation email on this first round.
In other news, we have just opened the official Gran Skrea forums at https://granskreaonline.boards.net/, so feel free to sign up and come say hello, and as always you're also welcome to join our discord server at https://discord.gg/mAuEVFb