Now after some digging related NOTAMs were indeed found for July 23-25 19:00 - 21:00 UTC towards SSO, all of which still active, so it looks like this may have a chance to get off the ground today.
Will it be using RD-193 or NK-33 or retooled AJ-26 back to NK-33?
What happened to this launch? Postponed indefinitely?
Launch Site: Site 43/4, Plesetsk Cosmodrome, according russianspaceweb.