Another common ask is a summary of the EDI features supported in R2.
Instead of writing it out, I thought it would be more interesting to the audience to read about it via a review. So here is a link to the review, in form of a blog. This person compiled this review based of my session at TechEd in Boston in June 2006 and has done a great job in crisply presenting an overview of the product!
https://www.biztalkgurus.com/blogs/biztalksyn/archive/2006/06/16/EDI-Features-in-Biztalk-Server-2006-R2.aspx
Suren