Diamond has just raised it's threshold for minimum orders on the products they carry from $1500 to $2500 in whole sale orders.
This of course will effect many small publishers since they wont be able to meet the sales now need to keep their product in the diamond catalog.
it will also effect publishers who get by selling low volumes of reprinted stuff every month.
Diamond is also getting rid of the print version of their catalog for porn comic (and going to an online version)
not sure how much that's going to effect the industry because I didn't know they had this type of catalog.
it also seems that diamond is cutting the amount of time they give retailers to reorder periodicals (such as comics and magazines) to 60 days.