It certainly seems so. How big, and how strong they are is still unclear. The Oppos says big, the Regime says they are nothing more than handfuls of troublemakers.
With Ashura coming soon it should become clearer how much strength the Opposition has, but if the memorials to Grand Ayatollah Hoseyn Ali Montazeri have been any clue, this could be the next real moment of crisis for the government.
Not a moment too soon.