It has yet to be confirmed if Gwen’ Stefani‘s contract is final to replace Christina Aguilera on NBC’s “The Voice,'” due to Christina’s pregnancy . There has been talk about Stefani joining the coach panel but, NBC reps made it clear that decisions haven’t been made. If Stefani joins The Voice she will be coming in with Pharrell who recently was announced to join the show as one of the coaches in the spot of CeeLo Green. Season 7 will start filming in June. According to http://www.huffingtonpost.com/, Stefani’s job wouldn’t be permanent and she will be coaching alongside Pharrell, Adam Levine and Blake Shelton. Christina will be returning to The Voice for Season 8.