Hello there!

Well, no, it's not bitcoin. It's not even a real cryptocurrency, you could say is only digital currency. This is a not minable coin. It will be listed in exchanges, but since is announced as a stable coin, that means the value will supposedly always be the same. This currency practical use will be pretty much only to by ads from facebook/instagram and for the money transfer market (which I believe is what they are really after since is a multi-billion dollar industry).

check this links:
https://www.ccn.com/crypto/bitcoin-evangelist-andreas-antonopoulos-says-facebooks-libra-isnt-real-blockchain/2019/06/18/
https://www.theguardian.com/commentisfree/2019/jul/01/the-guardian-view-on-facebooks-libra-funny-money