FINAL CRISIS: REVELATIONS #1: A "Final Crisis" tie-in from Greg Rucka that centers around The Spectre. And yes, Greg Rucka returns to give us more awesomeness with the New Question. Huzzah!
FINAL CRISIS: LEGION OF THREE WORLDS: A 30th century grudge match begins between Superman and the Legion of Superheroes and the Time Trapper, who's recruited some help from a certain whiny punk from the last Crisis. It should be noted that the solicitation refers to him as SuperBOY-Prime. It could easily be a typo, but make of it what you will.
TEEN TITANS #62: A look at the Titans from the perspective of...Wendy, Marvin, and Wonderdog. You've GOT to be shitting me...
ALL-STAR SUPERMAN #12: The conclusion to probably THE single-best Superman story ever. Not really a good jumping-on point (I'm waiting for a trade, myself), but for those that have been in on the ride, it all ends on August 6.
Outside of the Final Crisis stuff, it doesn't look like a lot's coming from DC's end this August. Still, the good looks great. Marvel's solicitations come tomorrow.
Monthly comics are metaphorically more like cassette singles, whereas graphic novels are like LPs. I think there'll always be long-form trades or OGN's but I really think monthly comics are coming toward an end, at least from the big two.