Apple is expected to show off new iPhones, an updated smartwatch - and maybe some new gear for listening to both - during its annual product launch event.
Hard-core Apple fans will be watching closely on Wednesday 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 is also working on new headsets that fit the iPhone's "Lightning'' power port, and possibly new "Air Buds'' that use a Bluetooth-like wireless signal.
