According to a few select Model S/X owners, Tesla has sent out invites to the Model 3 reveal. No more details other than March 31 in Sourthern California for the location was given. In the invites it says the closest airport would be LAX so in traditional Tesla style, I expect it to be at their Hawthorne design studio beside the SpaceX factory. What better place to keep it under wraps of pure secrecy! We should know more in the next 2-3 weeks.