Is it the case now that any 77W in 4 class config has the new J?
Looking at SQ327 MUC-SIN in Jan, which when I flew SIN-MUC-SIN in Oct last year was 77WN going up and 77W (old J) coming back. Flying SIN-DUS on the A359, and coming back, have the choice between departing either MUC or DUS again. Want the new product, and all the recent sectors have been operated by 4F/48J, but today it's being operated by SWA, which is an older config (unless it's come out of refit since mid year?).
9V-SWA is not an older configuration -- it's a 77WR. SQ327/328 are virtually 100% certain to be performed by 77WR aircraft.