Flying CX260 today at 13:10 (19:10 HK time). At 8:48 I got the message from CX:
CX260/20Aug/CDGHKG: We regret to inform you that CX260/18AUG is delayed due to operational reasons. Flight is estimated to depart at 17:20 local time (Paris). Please note that our check-in counters will close at 16:00 local time (Paris). We apologize for all inconvenience this might cause you.

So I delayed my cab booking and started to relax. I called CX Paris to check but they are closed on week end. Then I checked arrival of CX261 in Paris this morning and it showed only 75 minuted delay.That should be ample time to turnaround (supposed to remain 6 hours on ground). So I thought the plane had a technical problem. I I checked the status of the flight on CX.com and got the same message. Then I started to be suspicious as I noticed that they were talking about both 18Aug and 20Aug. So I called HK from Paris and, after waiting 20 min, the guy told me that CX260 is expected on time.

SO I will go on time, but I bet that a large number of pax will not note the date discrepancy and come to the airport a few hours later. Will be chaos.
Bravo CX IT.