Now that Economics has fulfilled it's commitment requirements, and it says 'lauching private beta soon...' - when exactly will this be? What is required to do before then?
See the answer to this post.
It appears that it always takes a few days.
So we wait for the invitation to show up in our SE accounts I guess.
Therefore, "what is required to do before then" is, in my humble opinion, just to
A few days ago, I sent an email out to the Stackexchange folks and they said they usually roll out private betas on Mondays. So, we should be expecting it to happen today!
Or sometime in the beginning of the week.