Several descriptions of the movie used the phrase "feminist slant." I dunno about that. Maybe a slight feminist list? It fell down on the feminist angle in my opinion because it was mostly about things being done to women, and women getting their way by being manipulative, or women complaining that gods or goddesses were being mean to them. I spent some time toward the end rooting for the "bad guys" (Morgause, Mordred, and to a lesser extent Viviane) because they were trying to do stuff instead of just sitting around feeling put upon or going along with stuff.
But I guess compared to the usual fare it comes across as feminist because the main characters are women and because women are the ones who are deciding which men are going to be the war leaders.
It does qualify under the Bechdel Rule...the four main female characters (Morgaine, Morgause, Viviane, Gwenwyfar) talk quite a bit to each other. Most of the conversations among them are still about men. Or boys. Or about how to get or unget pregnant. But a few conversations are about the Goddess, war, relationships between women, and so on.
(Oh, and the guy who played Mordred, Hans Matheson, was really hot.)