It will be quite a while, but after my friend told me she cried at the theatre, I don't think it is a film I could risk watching anyway - I think the Hollywood treatment would make it far, far to heartbreaking and I wouldn't be able to see it through the tears!
Speilberg bought it, so theres a chance it may be a bit americanised, cause he is a bit that way inclined, but it should be fantastic none the less. I've not seen the play but I'd love too!