The gospels depict Mary Magdalene as one of Jesus' closest companions. Her emotional encounter with the risen Jesus and her supposed sinful past have fascinated Christians for centuries.
Its heroine, played by Rooney Mara, is billed as a young woman who joins "a radical new social movement" and "must confront the reality of Jesus' destiny and her own place within it".
There was amusement when cast members were pictured in ancient garb smoking on set.
Meanwhile, the Roman Catholic Church has enhanced the saint's status.
Last year her Saint's Day (22 July) was promoted to a Feast, equal to those of most of the male Disciples.
Explaining the decision, Archbishop Arthur Roche pointed out that she had long been known as "apostle to the apostles, as she announces to the apostles what they in turn will announce to all the world."
This refers to John 20:17, in which Jesus sends her to the disciples to tell them he would ascend to God - "apostolos" in Greek means "one who is sent".
The Vatican press office said that 22 July would be "a feast, like that of the other apostles."
A special prayer for use at Mass on that day says Jesus honoured her with the task of an apostle (apostolatus officio),
This has coincided with what some believe are signs of a change in Rome's attitude on the possibility of women priests.
The announcement on Mary Magdalene, and the setting up of a commission to discuss the ordination of women as deacons - not priests, but able to preside at weddings, christenings and funerals is an indication to some of change.
Tina Beattie, Professor of Catholic Studies at the University of Roehampton, says: "I accept that it has to be slow, it has to be sensitively done... But my own feeling is that something is happening".
What was said about the feast day was encouraging, says Pippa Bonner of the campaign group Catholic Women's Ordination. "As soon as we spotted that we shared that news around - I think that's a very, very positive step."
In 1994 Pope John Paul II declared "that the Church has no authority whatsoever to confer priestly ordination on women and that this judgment is to be definitively held by all the Church's faithful." Jesus had "called only men as his Apostles", The constant practice of the Church, he stressed, "has imitated Christ in choosing only men."
In November, while returning from a visit to Sweden where he worshipped with the country's female Lutheran archbishop, Antje Jackelen, Pope Francis was asked if his Church still ruled out women priests.
"Saint Pope John Paul II had the last clear word on this and it stands," he said.
Asked again if the ban was permanent, he responded: "If we read carefully the declaration by St. John Paul II, it is going in that direction."
Prof Beattie comments: "Whenever he's asked to give a reason he always references John Paul II... I'm not aware of him saying that under his own Papal authority."
The idea that statements about Mary Magdalene and her "apostleship" contradict the rulings of John Paul II is discounted by many Catholic commentators.
"Many Catholics from the Anglican tradition will rejoice at her commemoration being raised to the dignity of a Feast, while thinking that the idea that this has any relevance to the closed question of women's ordination is entirely fanciful," says Fr Simon Chinery, spokesman for the Ordinariate set up by Pope Benedict as a home within the Catholic Church for Anglicans opposed to women bishops.
Austen Ivereigh, co-founder of the group Catholic Voices, says: "Declaring her day a Feast reflects a growing awareness that the role of women in the early Church was an important one, and needs to be recovered.
"But opening church leadership to women's unique gifts does not equate to opening the priesthood to women - at least that argument is not being made in any significant way in the Church at the moment."
Arguments against women's ordination in the Church of England were ultimately unsuccessful.
But of course the Catholic Church is very different. In the CofE the argument over women's ordination went on for decades. But it was possible to say where it had got to by referring to the state of discussions in the General Synod. It could not have been stopped for good by a ruling like that of Pope John Paul.
A change in doctrine can come as news to Catholics. And it can happen suddenly.
That was the case with Mary Magdalene herself. In the late 6th Century AD Pope Gregory I declared that she was also the woman in Luke 7:37 who "lived a sinful life", who washed Jesus's feet and dried them with her hair.
This fuelled the tradition that Mary Magdalene was not only a sinner (which Christianity says we all are) but a particularly colourful one, and inspired dozens of artistic portrayals of her ranging from ravaged penitent to borderline erotic.
But the revised Roman Calendar of 1969 simply declared that 22 July was indeed the day of Mary Magdalene, but she was not the woman in Luke 7:37. And that, after nearly 1,400 years. was that.
Is she, as the Anglican Rev Giles Fraser claims some see her, "the standard bearer for women's developing role in the Catholic church, and even... for women's ordination"?
The Church can hardly show it is moved by the late unofficial gospels - one of which talks of Jesus repeatedly kissing Mary Magdalene,; the recent crop of stories claiming she was actually married to Jesus; or the Rooney Mara film.
And Pope Gregory's claims about her sinful life may be discredited. But all these things contribute to her prestige.