I asked Porsche when the 'T' versions of the 718 will be available in New Zealand and was told 2020 (this may well be MY 2020); if that is true then I would suggest it is unlikely there will be a facelift until at least MY 2021. This would fit in with when the 911 T model went on sale in NZ (i.e. towards the end of the 991.2 lifecycle).The rumors say "There will be a facelift end 2019" and surprise surprise - there is a B6T for the 718.
Interesting if Porsche goes that way cause they told us that a B6 won´t fit in. Maybe they develop a "Hogwards" version...