Apple is getting ready to unveil new iPhones today, which might not include the iPhone's traditional headphone jack.

SAN FRANCISCO — Apple is expected to show off new iPhones, an updated smartwatch and maybe some new gear for listening to both during its annual fall product launch event today.

Hard-core Apple fans will be watching closely for details about the newest features coming to Apple’s gadgets, from a widely anticipated dual-lens camera for the iPhone to a rumored GPS sensor in the Apple Watch.

But even casual users of consumer technology may be interested to see if Apple follows through on reports that it’s eliminating the iPhone’s analog headphone jack, since that could pave the way for a big shift in the way people listen to digital music.

Getting rid of the traditional analog jack means future iPhone owners will need earbuds or headphones that use a digital connection, either through a wireless signal like Bluetooth or a cord that fits in the same port used for recharging the device.

Apple may ship the next iPhones with an adapter that lets older headsets plug into the charging port. Tech blogs and industry analysts say Apple also is working on new headsets that fit the iPhone’s “Lightning” power port, and possibly new “Air Buds” that use a Bluetooth-like wireless signal.

Aside from some new colors, the new iPhones aren’t expected to look much different from the models Apple has been selling since 2014, which include a standard model with a 4.7-inch screen and a “Plus” version with a 5.5-inch screen.

Analysts say Apple is departing from its usual two-year development cycle and won’t announce a major revamp of its smart phone this year. Despite a recent dip in iPhone sales, most Apple watchers don’t expect a big overhaul until 2017, the 10th anniversary of the first iPhone’s release.

Even so, the new phones are expected to come with faster processors, more memory and better cameras — an upgraded lens for the standard iPhone and a new dual-lens system for the Plus model that promises better “zoom” capabilities and improved performance in low lighting.

Analysts say the new Apple Watch also will have some new features, including a GPS sensor that can be used with exercise apps and other services. But despite reports that Apple has been working on giving the watch its own cellular capability — meaning it wouldn’t need to be paired with an iPhone — analysts say that’s unlikely to come this year.

Apple also is expected to announce the dates when the new models will go on sale, along with its timetable for releasing the next major upgrades to the software for iPhones, iPads, the Apple Watch, Apple TV and Mac computers.

Along with the new iPhones, some analysts expect Apple use today’s event to promote new gear from Beats Electronics.