The update, which became available for download Monday, adds support for Apple Pay, brings back the camera roll and launches the iCloud photo library.
Apple Pay users report issues purchasing items in apps, and some Bank of America customers are seeing double charges. But the problems aren't all Apple's fault.
Have questions about Apple Pay? We've got answers.
Some retailers have shied away from Apple's mobile payments service, and the equipment needed by supported industry players won't pop up overnight.
A video posted by blog site TechSmartt shows how to "trick" Apple Pay into working on NFC terminals outside the US.
New iPads and Macs, as well as an official launch of the OS X Yosemite computer operating system, should show up at Apple's event this week.
Apple's been gaining more partners since it announced the service last month and it's ready to take it live.
The release of WatchKit will allow developers to start creating apps for the Apple Watch, which is expected early next year.
Apple unveils new iPads on Thursday that for the first time include the iPhone's Touch ID fingerprint sensor. The company says it was "the most-requested feature" in its tablets.
A new World Wide Web Consortium group tackles issues like authentication and digital wallets. The eventual result could be electronic payments not so dominated by particular companies.