The Russian Language & Usage have reached 100% commitment and from a few days there is the information that committed users will be invited to the private beta soon. However, "soon" is not very precise information. Is it a few days, a week, two weeks?
I've found out that people were asking when their site will launch: Astronomy: How long before beta?
But, without asking, is the information about launch plans available wherever? Such callback would be appreciated, even if it would be info "not in that week"...