I was informed by mail this morning as I recently booked a trip to Beijing for May next year. Flight times remain the same, both the old and new flights are currently listed in MMB / in the app.

Only difference at this moment seem the fares. I was able to book my trip (DUS - LHR - Beijing - LHR - DUS) in CE/CW for EUR 1.635 (around 1.460 GBP) while prices now are at EUR 4.800 (4.300 GBP). Only flex fare class available at the moment for the long-haul part (C), while I have non-flex (I).