There have been plenty of ‘Apple Pay Octopus is coming’ leaks since Octopus Cards Limited (OCL) and Apple started testing in December 2018, but there has not been a single screenshot leak, until now:
The dark mode Octopus card detail UI here does look legit and definitely iOS 13. Oh if I could only get my grubby hands on it. Hopefully we’ll get official details from Apple soon, perhaps in tandem with the Apple Card rollout due this month.