The balloon Reggie has when he enters the hospital room says it's a boy.
Veronica's song in Archie's welcome party is called "Eres Tu" and it was originally recorded in 1973 by the Spanish group Mocedades. It was the first song in Spanish to make it into the US Billboard top 10, peaking at number 9 in 1974.
Veronica tells Reggie that for all they know, Archie walked back to Riverdale from Canada, which wouldn't be a long walk as that is where Riverdale is filmed.
Veronica calls Juggead "Torombolo." This is the name of the character in the spanish comic books.