While NASA and Boeing once said they would launch the unrolled Starliner in August 2018, skeptics always had doubts that the two would achieve that goal. Initial delays were no surprise. NASA says the new date for August 2019 will be due to limited takeoff opportunities in spring and early summer. NASA said in a press release that the Starliner probe is about to fly unmanned, but the delay gives the teams extra time for testing and validation activities without an unnecessary schedule.
August is a work appointment and there is no guarantee This will be the last delay. Starliner's first occupation test with crew is now scheduled for the end of 201
This means that Boeing is a bit behind in its race with SpaceX, which had its first unpaved test flight in March. SpaceX is now preparing for a crash test during the flight – showing that astronauts can be carried off the carrier vehicle when needed. A test that Boeing has to perform as well. It is expected that NASA and SpaceX will reassess their test dates in the coming weeks. To be fair, SpaceX has experienced its own delays and it is still too early to say who will win this race.