I got my last edition of MacWorld in the mail yesterday. There were clear instructions on how to cancel/get a refund for the remaining months if you don't want digital. For me,t hat was most of my subscription since I just renewed a couple months ago.
I know digital is the future. But the main reason I subscribed was because it was paper. If I'm reading electronic, blog posts are perfectly fine for what I got out of it. By contrast, I do pay for a e-subscription to the newspaper. The collating of information is worth it for me there. (For domestic news. I also pay for a magazine for international news.)