Seems if you purchase either TFC-D01 Cloud Megatron, TFC-D02 Starscream, TFC-D03 Shockwave, or TFC-D04 Hellwarp you get a new Transformers Cloud 24 (!) Page Comic Book. I believe all existing Hellwarp orders will also receive this comic book.
Story by Makoto Wakabayashi and illustrations by Naoto Tsushima.
eHOBBY has several bundles (which don't appear to be a saving on any money) featuring the 4 Cloud Decepticons.