GLADIATOR - what you quoted is an instruction to the pilots on the B744 fleet from their fleet boss, it is definitely NOT the memo from the CAAS to SIA advising that the 3 crew concept as previously practiced by SIA was no longer approved.
You ask us to take special note of the date, (07 Nov) but for this to have any relevance at all can you please quote the actual memo from the CAAS to SIA and, most importantly, give the date of that memo?