Via the BBC:   Tight security in Iran on election anniversary.

It would appear that the opposition has lost considerable ground in that year:

Opposition leaders have called off planned protests, saying they want to avoid the loss of innocent lives.

[…]

The opposition seem to have run out of ideas. Many Iranians are now reduced to sullen acquiescence. The government’s next big problem looks to be the economy: with falling oil revenues, it could be, fairly rapidly, running out of money.