Well, PC Magazine just announced their 100% transition to a digital version, due to take place next year (see: http://www.pcmag.com/article2/0,2817,2335009,00.asp for more details). They will offer a digital edition that is portable, deliverable via email and other methods, and will continue their network of websites.

This isn't surprising, and we should see many more magazines shifting to this delivery mode, as the prices for printing and distribution continue to rise ... and the willingness of people to pay for content decreases (possibly the largest factor in these transitions).