Instead, it will be digitally released in Disney+ on September 4, 2020 for a premium fee of US$29.99.
It will still be theatrically released in countries where theatres have re-opened and other countries that don't have Disney+.
Back then, it had been originally set for November 2, 2018 until it was pushed back to March 27, 2020. Due to COVID-19 pandemic, it has been pushed back once again to July 24, 2020. Let's just hope that this pandemic is over as soon as possible.