Despite setbacks and job cuts, Google is promising a big update in its race against Amazon’s delivery drones (GOOG, GOOGL)

Project Wing, the delivery drone initiative under development at Google-parent Alphabet, felt another jolt of turbulence this week as more members of the team were officially cut loose.
But even as sources inside the high-profile group report ongoing challenges, the drone unit is preparing an important update to demonstrate progress that's expected in a matter of weeks.
Business Insider has heard from multiple people that a group of employees left the team this week. And