No idea if this is canonical, but it appears Zachary Walzer has a twitter account, and asks if anyone can feed his dig, whose name is Laika. This was the name of that Russian first dog in space who was launched from Baikonur Cosmodrome.
At the New York screening apparently Josh and Bracey were asked if Tom and Sofie will ever get together romantically, but the creators were mum. This obviously means YES.
Not really a spoiler, more a theory. Could Francis Norton be named after Leland Francis Norton, a WWII pilot who gave his name to Norton Air Force Base, a location often mentioned by Fake Moon Landing nuts as the site where the 'fake' moon footage was filmed? No, probably not.