https://www.techradar.com/news/oneplus-6t-might-hit-stores-on-october-30

It’s rumored that the OnePlus 6T will be announced on October 17, but as for when you’ll actually be able to get your hands on it, that date could be October 30.

It’s a date that comes from an Amazon India listing for the phone, spotted by MySmartPrice, which lists October 30 as the end date for pre-orders, presumably meaning the OnePlus 6T will ship either on October 30 or October 31.