As you may or may not have heard, Archie is going to “modernize” the look of their characters for a few stories, at least. On this prototype cover, Veronica doesn’t look too happy that Betty is having a good time over there with Reggie, while Archie seems to be paying more attention to his radio than to her (they might want to change the radio to an mp3 player). Plus she’s really overdressed for a picnic, so I’m sure she thought Archie was going to take her somewhere nicer than this.
Okay, maybe it’s actually just an old Harvey cover. Still, a nice example of a low-key classic style romance cover, with the tender foreground scene and promises of jealous rivalry.