NASA, Boeing Delay Starliner Test Flight To ISS Written 4 April 2019

CNET News reports that “NASA announced on Wednesday that Boeing will target August for the first uncrewed Orbital Flight Test of the CST-100 Starliner,” and “a crewed mission is unlikely to happen until late 2019.” Although “the Starliner spacecraft is close to completion and is designed to be reusable up to 10 times,” NASA has yet to “set a solid date for a crewed SpaceX Demo-2 mission to the station.” 
More Info (CNET News)