No, yes, and no! No, it's not a conspiracy. Yeah, coronaviruses aren't new. SARS-Cov2 is even the seventh coronavirus capable of infecting humans and causing what's called the Covid-19 pandemic. The SARS-Cov2 genome is very close to the SARS genome (8000 people infected including 800 deaths). Source : https://www.who.int/health-topics/coronavirus