An email from CX last week, about bookable upgrades had a link for an upgrade availability checker.

Any experiences? Presumably it only shows availability for the PoS/PoO of the origin point of the segment chosen - looking at a couple of flights where expertflyer availability & the upgrade checker suggest opposite results..the checker also always seems to have a 'Last update: 12:01 (Hong Kong Time)' message (without a date mentioned).