I picked up the new Robbins recently but haven't had a chance to read much of it. It is definately larger than the 6th edition! Some of the chapters have new authors which may be good or bad; won't know until I read it. Overall, it looks like a worthy investment. With the increased information on molecular and genetic mechanisms, it will definately be something I use for path boards, particularly for non-neoplastic pathology. In fact, one of my attendings, a renal pathologist, said the chapter in the 6th edition on kidney was the best chapter for non-neoplastic kidney disease that he's come across in a general path textbook. I think the 7th ed may have a new author for this chapter, though.