Yeah, the smart ones do.... However, RLD has this cool marketing site available only to the press where you can download the promo jpgs that most companies normally send on cd-rs or dvd-rs. It's brilliant.
Up until last year JM was still old school sending chromes aka slides which were pretty much useless to me reviewing on XPT, but now they're in the 21st century.
Plus, even for print there's better resolution and dpi on image discs because they're easier & quicker to use than an archaic slide scanner.