I'm due to fly BOS-LHR, August 23rd. On noticing that the flight time had changed I went to see if there was a more convenient service I could change to, not even the service I'm on is bookable now though.

Is it safe to assume VS will eventually cancel this flight and I will be rebooked on an alternative service? If so is it worth me proactively selecting something now, rather than getting whatever is left when they do officially canx?

The flight is a Flying Blue miles booking, originall on Delta that was transferred to VS, when the DL flight was cancelled