People have increasingly challenged the "modest dress" mandates over the past decades, but there used to be a "Guardian Patrol" that would try to enforce modest dress in public spaces. After Mahsa Amini's death the Guardian Patrol was shut down, and there was a massive increase in women skipping head coverings, in particular in larger cities like Tehran and Esfahan.

However, skipping modest dress in media is a different matter. It has become laxer, but not by the same extent. The religious leadership is extra sensitive about modesty in music, so I think the context of "singing for men without head covering" is the signal here.

I'd also mention that there will be a lot of backsliding of these hard-won victories with this war, as ultraconservatives are gaining a lot of power and legitimacy.