Apple has sent out invitations for a press conference on September 12th. The company didn’t reveal the exact nature of the event, but if you’ve been following the news it should be pretty obvious: it’s all about the next iPhone. The event will take place at the Yerba Buena Center in San Francisco at 10 AM local time.

Apple is known to include few details and some subtle hints within its press invitations. This time was no exception, with a note that reads “It’s almost here.” and a big 12 marking the date, but reflecting the shadow of a 5. The latter seems to indicate that the new iPhone will be called the iPhone 5 after all, even though this would actually be the sixth iteration of Apple’s smartphone since the device was launched in 2007.

Whether that’s an accurate interpretation remains to be seen. Far more interesting will be to learn what the next iPhone will bring to the table. The device is believed to come with a larger screen than previous iPhones (4-inch, 16:9 aspect ratio is the mainstream bet), 4G LTE support, the 4FF's "nano" SIM standard, a thinner unibody aluminum case with a two-tone back and a new, smaller dock connector.

If recent rumors prove accurate, Apple could open pre-orders for the new iPhone the same day the phone is announced, with sales starting a little over a week later on September 21.