Ars Technicha's NASA emphasizing “speed” in its return to the Moon says:
The leader of NASA's scientific programs, Thomas Zurbuchen, said this program was designed with speed in mind, and it would tolerate some failures as it takes "shots on goal" in attempting to land on the Moon. "For us, if we have any wish, we'd like to fly this calendar year," he said. "We do not expect every launch and landing to be successful."
NASA has begun to develop a dozen payloads, some entailing scientific experiments, others to better characterize the lunar environment, for these commercial flights. Zurbuchen said those payloads will be ready for missions before the end of 2019 but that the providers will set the schedules for when they are ready.
From Phys.org's NASA heading back to Moon soon, and this time to stay:
Before this manned program, NASA is also pushing to send scientific instruments and other technological tools to the Moon in 2020 or even before the end of this year.
The agency is also calling for quick-turnaround bids to manufacture and launch such instruments, offering financial incentives to make it happen fast.
"We care about speed," said Thomas Zurbuchen, associate administrator of NASA's Science Mission Directorate. "We do not expect that every one of those launches or every one of those landings will be successful. We are taking risks."