In a short post on the /r/flightsim Reddit sub, Dovetail Games announced they would be postponing the project as they work on visuals, performance, and experience after the feedback they have received from the flightsim community.
DTG says they do expect to have a detailed development update ready for us in the New Year. I guess now we wait some more.
Interestingly enough, we are running out of days in November and haven’t seen an XP11 release yet. Perhaps November isn’t too kind to the new simulators?