Subgame invitation is supposed to go out before end of April 1st Monday, that is today (almost 250 invitations)
As mentioned in the medium article and I quote
Nash Community members selected for Bluefield have already been contacted. Those selected for Subgame will receive a message through the Community by the end of Monday, 1 April. Invites for Equilibrium will be distributed through the Community later in April.
The total invitations is roughly 250 as mentioned In the beta testing schedule
So, has anyone received the invitation? This number is 250 and not under NDA.