Seems to me a deliberate name change, pushed in WHO papers and used by the MSM. But not because of China, but to avoid people calling it SARS 2.0. They want us to believe that SARS-CoV-2 found its way from a bat to another animal and then to us, completely independent from SARS-CoV-1, and they show us fish market pictures to make us believing the story (even if there are no horseshoe bats at or near the market). They did it because if SARS-CoV-2 is derived from SARS-CoV-1, then it is man made. In this paper they modified the SARS-CoV with a sequence taken from a bat CoV, so it could infect humans better than the original virus. They say that they have done it to prove that other CoV from bats are a threat (fish market story), but maybe they have just created the beta version of SARS-CoV-2. Maybe they have not created SARS-CoV-2, but they showed how easily it can be done: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4797993/