French site Mobile24 published a listing of iPhone accessories. On this page, it calls the upcoming 6.1-inch LCD iPhone, the iPhone XI. This comes just days after another site, 9to5Mac, said Apple’s 5.8-inch and 6.5-inch OLED iPhone models will be called the iPhone Xs and iPhone Xs Max, respectively. 

Clicking the link for iPhone XI accessories brings up this page:

Here, you’ll find categories for the following iPhone XI accessories: Cases, Chargers, Batteries, Screen Protectors, and Car accessories.

Apple plans on holding its fall event on Wednesday, Sept. 12 beginning at 10 a.m. PDT. At that time, we should see the official reveal of all three 2018 iPhones, two iPad Pro tablets, and the fourth-generation Apple Watch. All three new iPhones are expected to look similar to the 2017 iPhone X.

(Hat tip to Twitter user Felix Lapalme for finding the iPhone XI links first).