Short lived new reality. Given this was just a prologue it might be so short lived that we might not even revisit it (based on next issue's cover and solicitation)

I see this like the few minutes in Star Trek First Contact where, protected by the temporal wake, the Enterprise can see the Borg-conquered Earth even though their existence should have been wiped out by the changes to the timeline. And like that film I expect the next few issues will be our heroes back in time trying to set things right.