Also seeing this as a per segment upgrade now. But very weirdly, everything is doubled for a current roundtrip flight I have in February. Like, each flight appears twice, so instead of 4 segments I have 8 segments. Don’t think I’ll upgrade any of them (if only because my SO is booked on the same flights on a separate PNR using miles) but weird to see. Also tempted to test it out by trying to upgrade one segment and seeing what happens lol but think I’ll resist.