dior (private) sale in singapore

hi gals
i wanted to replace my dior romantique heart locket wallet as i lost it last week :crybaby:
so i went back to the dior isetan where i got it from and asked if they still have it.
sadly, the SA told me it's a discontinued series :crybaby:
but she mentioned that i could try my luck at the upcoming mid-year sale in june.
anyone knows when it is specifically?