When it comes to Apple keynotes, there are three locations that it uses quite frequently: its own auditorium at the headquarters of 1 Infinite Loop (called Town Hall), the Moscone Center and the Yerba Buena Center for the Arts these last two, in San Francisco.
A year ago, she ran away from that standard and held the special event where she launched the iPhones 6/6 Plus and announced the Apple Watch at the Flint Center for the Performing Arts (in Cupertino). It was there, in 1984, that Apple announced the first Macintosh; then, in 1998, the iMac G3.
Now, for the keynote that is likely to take place on September 9th, it looks like it, too, deviates from the standard. And the location chosen this time, according to the Hoodline, it was the Bill Graham Civic Auditorium (also in San Francisco). According to the Cult of Mac It was there that, in 1977, Steves Jobs and Wozniak introduced the Apple II to the world (at the time, it was still called San Francisco Civic Auditorium).
According to sources, Apple would have reserved the venue for more than a week to give it enough time to assemble all the structure necessary for the presentation. The auditorium has a capacity for 7,000 people against 1,470 for Yerba and 2,400 for Flint, just so you can have an idea.
If all of this is really hot, Apple should send out invitations to the press sometime next week. For this keynote, new iPhones, a renewed Apple TV and maybe even updated iPads are awaited.