today

Even in New York. The picture is from as early as 2005, the quite fetching Dr. Amina Wadud led the Muslim service after another woman, who wore no headscarf, sounded the call to prayer.More than a hundred men and women knelt in adjacent rows, with no curtain to divide them. Some of the men at times looked nervous or unsure they should be there. Newspaper reporters, photographers and television cameras surrounded those attending.

Mildly interesting religious debate about it, here and here.

Common enough now, even in China and Morocco.

IMO: Mujahidaats are common enough whether you like them or not - I strongly dislike that idea, by and large, but they do happen. So on the face of it female imams could be a more positive, modern, side of Islam. Just as polygamy can be legal in Islam, for somewhat similar reasons it can also be argued that female imams are a good idea. and indeed one might well hopefully expect some of them to be so-called 'Imams of Dibley".