Here is a link to an interesting academic project, tracing the changes in Marian devotion under the Tudors:
My thesis examines the changing position of the Virgin Mary during the English reformations of the sixteenth century. It explores the unsettling of established Marian tropes in order to assess the development of theological belief and its interaction with shifting patterns of piety. It also analyses the use of the Virgin as an archetype for England’s 'female kings', Mary and Elizabeth. Although she had been a central figure in medieval Christianity, the Virgin’s role in the incarnation and her place in the scheme of salvation lacked clarity, leaving space for religious speculation. Consequently, re-imagining Mary became an aspiration for Catholic evangelicals and Renaissance humanists, and one of the identifying symbols of Protestantism.
Situated at the crossroads of cultural history (representations of the Virgin) and social history (devotional practice), this research will contribute to the post-revisionist debate within Reformation studies (Wooding, 2000; Wizeman, 2006) and also engage with key writers on the sociology of religion, such as Emile Durkheim, Peter Berger and Max Weber. Consequently, it promises insights into paradigm formation, the activity of collective consciousness and the birth of confessionalism.
Although the Church of England does honor this feast on their calendar--with a nod toward the Eastern Catholic/Orthodox feast of the Dormition of Our Lady--the 2005 document on Marian dogmas and devotion agreed to by the Anglican - Roman Catholic International Commission (ARCIC) noted that:
The dogmas of the Immaculate Conception and the Assumption raise a special problem for those Anglicans who do not consider that the precise definitions given by these dogmas are sufficiently supported by Scripture. For many Anglicans the teaching authority of the bishop of Rome, independent of a council, is not recommended by the fact that through it these Marian doctrines were proclaimed as dogmas binding on all the faithful. Anglicans would also ask whether, in any future union between our two Churches, they would be required to subscribe to such dogmatic statements (para. 30 of Authority in the Church II (1981)).
Mary: Grace and Hope in Christ ended with these advances in ecumenical understanding and agreement on the role of the Blessed Virgin Mary:
As a result of our study, the Commission offers the following agreements, which we believe significantly advance our consensus regarding Mary. We affirm together