Justice League of America #71 Ad

Pretty simple ad for Justice League of America #71, though I have to admit I'm not sure what, if anything, "point of no return" is referring to. Is it Blanx's attack on Mars? Manhunter's dedication to his home planet, which eventually pulls him out of the JLA? Or is it just about the cover? We'll never know.

Also, I feel like someone at the last minute realized the ad didn't mention when the book went on sale, so they grabbed a pen and squeezed it in.