It's pretty safe to say that season will start next week Friday (Nov 22). This week would be too early with no heads-up anymore (basically patch would already be live on the US as patch day is usually on Tuesday) - and the week after it's Black Friday. But we don't know for sure.
Nevalistis is sick and hasn't been able to post the news.
https://us.forums.blizzard.com/en/d3/t/improved-communication-isn-t-what-is-happening-zero-clarity-on-patch-changes/6751/65
It's pretty safe to say that season will start next week Friday (Nov 22). This week would be too early with no heads-up anymore (basically patch would already be live on the US as patch day is usually on Tuesday) - and the week after it's Black Friday. But we don't know for sure.
Other sources say S19 starts when sun and moon kiss while the snake dances around the fox.