It is unlikely that the Libra stablecoin will already have any real impact on Bitcoin, even if it is issued. Recently, it has been considering the possibility of several options for providing this stablecoin with one type of fiat currencies of states. Therefore, Libra will no longer be distinguished by the provision of a whole basket of various state currencies and even securities, and will be the same ordinary stablecoin, of which there are already hundreds. In addition, Zuckerberg in the US Senate promised that this coin would have nothing to do with Facebook.
However, to see what it will be necessary to first wait for her appearance.