Really? Zuckerberg giving up? Maybe he just introduced this to test the viability of payment system but later on, he will be more ready than ever. I don't think he will easily give up on Libra as everyone is already integrating blockchain technology within their system.
Zuckerberg is not yet giving up and in some news sites have already published an article that said facebook will try its chance to build libra coin started from Canadian countries. That's the only way for libra to start its journey consider the majorities of EU countries also US banning libra consider it can disrupt the economic system and stability of the country itself.
The fed is also released the new article regarding how stable coin can be a threat to the government.
Mark has already said about the delay of libra coin. I believe facebook is still working on it.