At least, that's how I read the information covered in this New York Times article, and accompanying slideshow. Three issues of Archie marries Veronica, three issues of Archie marries Betty, a quick shout-out to Robert Frost, then it's back to normal.
Best quote from the article: “The polls that I’ve seen ran about 80/20, Betty over Veronica, with Jughead continually coming in a strong third,” said Mr. Uslan, a comic-book historian...
Now *there's* an alternative future: Does Archie try to somehow alter Jughead's expensive and health-endangering hamburger habit? How does the perpetual and inexplicable lustful attention Archie gets from all the Riverdale hotties affect Jughead's self-esteem? And don't get me started on Moose and Reggie's reaction.
There's plenty there to work with. Fanfic folks, get those keyboards and pens going!