@saucygiraffe: Hard to say if anything will get spoiled. I'd assume they're going to not mention any specifics to keep it new-reader friendly. Of course there are some lingering questions and one pretty big head-scratcher that may or may not be directly addressed in later issues of SECRET WARS.
@51stpresidentofplanetneutral: GHOSTBUSTERS GET REAL isn't Marvel or DC. I looked through just about all the IDW and Image books. There wasn't anything within a panel or two that jumped out. There has often been non-Marvel and DC books featured if you've been reading these each week. Plus, as stated at the end, I take suggestions, especially from those that felt we missed something. No one suggested anything else non-Marvel or DC.
@hempknight757: It varies from artist to artist and person to person. Some people do have their own sketchbooks where they keep them all. That way they can choose one with heavy stock paper or just have a place to keep them all contained. Sketch covers usually are high quality paper that allows for the sketches. I have seen some sketch covers that had a glossy finish which gave an artist a tough time but he managed to make it work. Most artists do and should have their own sketch paper.