The company is hosting a media event at its Cupertino, Calif., headquarters that will be streamed live online starting at 1 p.m. ET.
As usual, the company has not said what the event is about, but it is widely expected to unveil new iPads as it did during a similar event last October.
According to the technology website Mashable, Apple is also expected to announce that its mobile payment system, Apple Pay, is going live at hundreds of U.S. stores today. It may also officially launch the newest version of its Mac operating system OS X Yosemite, which was unveiled in June.
Apple Pay was first announced in September, alongside Apple's new iPhone 6, iPhone 6 Plus and Apple Watch.
Earlier this week, the website Apple Insider quoted an analyst who suggested that an iMac computer with a 27-inch Retina display will also be announced today.