With the game launch on September 29, it felt weird to not learn FIFA 18 Demo launch date at Gamescom last week. We tried to ask gameplay producer Samuel Rivera in the interview below, but this is the only thing we got:
"Coming soon! I really don't know the exact date sorry (laughs)". "We're in August twenty-something, so yeah, it's a couple of weeks probably, something like that."
A safe bet would be September 10-15 then, and now it seems it will actually be on that Friday, as it turns out the Xbox Store for Xbox One has been showing the September 15 date publicly. You won't find the demo as an item itself (nor outside the console), but it clearly shows as related content if you navigate the several game editions and purchasable items.
That is one day after the launch of PES 2018, to heat up the yearly rivalry a bit more. It is not known yet whether PS4 users will be able to download it a couple of days before, but given the marketing and promotion switch to the PlayStation platform, it seems likely.
Thanks, DTT.