The U.S. Navy published an update on the MQ-25A program on its Tester newsletter a few hours ago but the page is now offline. We managed to download screenshots of the article before the link went dead.
According to the article, second round testing of the Unmanned Carrier Aircraft (UCA) Mission Control Station (UMCS) “is planned for late fiscal year 2019 where the control station will be connected to Space and Naval Warfare Systems Command labs around the country to test the UMCS interaction with the networks necessary to control the MQ-25A wherever it may operate.”
The prototype is still on schedule to make its maiden flight this year and will reach VX-23 “in late 2021 to support an aggressive three-year test program to enable a 2024 Initial Operating Capability.”
The Source