As reported by the New York Times, Iran's opposition leaders are encouraging protesters to defy a ban on protests in effect on February 11, the thirty-first anniversary of the Islamic Revolution.
This is a very dangerous gambit. Iran has recently executed several protesters, and will likely continue to do so. The government has also warned that force will be used to quell any protests on the 11th. Whether protesters will have the fortitude to defy the ban remains to be seen.