This was reported by RIA Novosti with reference to a source in the rocket and space industry.
“According to the current plan, the Crew Dragon spacecraft should leave for the ISS for the first time on December 30,” the source said.
At the same time, he noted that this date is preliminary and a further delay in launch is possible.
On June 1, the first crew of SpaceX's US manned spacecraft Crew Dragon completed preparation for flight to the ISS at the Russian Cosmonaut Training Center.