Apple’s annual iPhone event is expected to take place on either Tuesday, September 12, or Wednesday, September 13, this year, according to Bloomberg‘s Mark Gurman in the latest edition of his Power On newsletter. With Apple’s usual timing, pre-orders for the new iPhones would go live a few days later on Friday, September 15, and a launch would come one week later on September 22.

Apple typically holds its event in the first two weeks of the month, enabling it to launch its new iPhones and book significant revenue before the company’s fiscal quarter wraps up at the end of the month, and it appears this year will be no exception. There have, however, been rumors of production challenges, which could mean certain models see very tight supplies or even a slightly later launch.