In the latest JustFlight newsletter, which you can sign up for here, JustFlight announced that their upcoming 787 in the F-Lite series of aircraft has unfortunately been cancelled.
The 787 was cancelled because of “We have been unable to achieve an acceptable balance between functionality and performance in FSX and Prepar3D”
This caused the team at JustFlight to cancel the 787 rather than releasing an unfinished product that would not meet the JustFlight standards.
The JustFlight 787 would have been a part of the F-Lite series, aimed at new simmers. The systems in the F-Lite series are basic, but a level or two above the default aircraft. Giving new simmers an opportunity to get more familiar with complex aircraft when stepping up from the default aircraft without jumping straight into a product like the PMDG NGX or the FSLabs A320X.