If there is a "revolution" at this point, it is of the stealth variety.
The "revolution" at this point is small, although savvy. They haven't been without help these few years. However, there's not a big outcry or enough drive right now to raise any kind of opposition to a hard-line regime with a lunatic with his finger on the button.
A good portion of the Iranian youth population has been, until lately, controlled through lax drug regulations and just enough freedom to not notice they're being controlled.
With the ban of Western music and a return to hard-line rule, maybe the democratic movement will have some motivated volunteers.
Of course, there's always the possibility that the surrounding countries will feel threatened and rebuff Iran. Iran's mullahs are Shiite and have meddled in their predominantly Sunni neigbors' business for a long time. Maybe they'll decide Iran shouldn't be allowed to meddle anymore.