Apple will reportedly announce the next iPhone on September 12 (AAPL)

Tim Cook

Apple is planning to hold its annual launch event for the new iPhone on September 12, the Wall Street Journal reported on Monday.

Official invites have not been sent out yet.

Apple is expected to launch three new iPhone models at its September event.

One of the new models is rumored to have a next-generation OLED screen that covers nearly the entire front of the phone. There's a lot of speculation about what this model may cost, with the New York Times pegging the price at around $999 last week.

Apple will likely launch two other iPhone models at the event that are more similar to the current iPhone 7 and iPhone 7 Plus devices.

Analysts also expect Apple to launch a new model of the Apple Watch this fall with its own cellular connection that may not need to be connected to an iPhone, and an Apple TV that can display content in super-high definition 4K resolution.

iPhone sales, Apple's most important business, have slowed in the past two years as the iPhone 7's design was largely the same as its predecessors. Apple is hoping a newly redesigned iPhone can spur major demand for its flagship device.

In June, Apple said it will launch a new voice-controlled speaker called HomePod and an iMac computer geared towards professionals by the end of the calendar year.

Join the conversation about this story »

NOW WATCH: Scientists are testing out a device that could heal organs and brain injuries in seconds