We've noted how the duo has been backstage at main roster events this week, along with Carmella. In checking with a source, I was told that there are plans to bring all three NXT stars to the main roster soon. The call-up is apparently a lock as WWE writers have had discussions about how to bring them up.
WWE often waits to bring new stars to the main roster after WrestleMania season but there's no word yet on if Enzo, Big Cass and Carmella will be debuting before WrestleMania 32 or after. Speculation was that they will debut after WrestleMania but that hasn't been confirmed.