The Guardian has an article this morning that talks about the new edition of The New Oxford Shakespeare (ed. Gary Taylor), which credits Marlowe with collaborating on the Henry VI plays and names Shakespeare as the author of Arden of Faversham.
I'm not much into authorship issues. I think it's pretty clear to me that theater is wildly collaborative, but I wouldn't have thought Marlowe would write with Shakespeare at that point in their careers, when Marlowe was already popular, and Shakespeare was a beginner.
As to Arden, which is a blast of a play to teach, I'm reminded of Don Foster's work claiming that "Elegy" as Shakespeare's based on computer analysis, and then deciding later that it wasn't. Of course, everyone would love to find another work by Shakespeare.
I don't think it's the first time Shakespeare's been suggested as the author of Arden. The question is, how does it change things?
For folks who use The New Oxford to teach (and I don't think Shakespeare anthologies sell much outside of teaching requirements), then it will make it easy to include Arden in a Shakespeare course. I don't know if that will happen much, though. I think it's easy to choose, say, Titus as one of the tragedies to teach in a survey, especially if you're going to teach Hamlet later, or Othello, because it brings forward revenge tragedy as a genre and race, both of which make for fruitful discussion. And there's lots to talk about re gender, violence, masculinities, social order, etc. But I don't think I'd choose Arden to do the same work in a class. I'm sure some folks will choose it, and make it work well for them.
If Oxford puts out a new edition of Arden as Shakespeare, that's interesting. (It's already available for a reasonable price in their World's Classics series, along with A Woman Killed with Kindness and Other Domestic Plays. And there's the Methuen edition, which is reasonably priced and useful.)
Other than that, how do these findings change what we write or teach about Shakespeare? How do they change what we see on stage?
Maybe Arden will get some more stage time, which is good, because I think it would work really well on stage (I've never seen it).
I doubt it changes much for the Henry VI plays; they'll still get taught in Shakespeare courses, and in drama courses, and maybe they'll get added to the occasional Marlowe course.