The much-anticipated update will apparently concern itself less with flashy, headline-grabbing features and will instead focus on improving reliability and performance.
The change in focus has been instigated by Craig Federighi, Apple's senior vice president of software engineering, according to Axios, which claims that he informed staff of the decision earlier this month.
A series of of changes, like a redesigned home screen, will now feature in next year's update.
Earlier this month, meanwhile, Apple chief Tim Cook said that a future iOS update will make iPhone throttling optional.
The American technology giant has recently faced severe criticism after it emerged that it had been purposefully slowing its handsets.
But Cook responded to that situation by revealing that the next update to iOS 11 will give iPhone consumers a choice of how their handset performs.
He explained: "We will tell somebody we're slightly reducing, or we're reducing your performance by some amount in order to not have an unexpected restart. If you don't want it? You can turn it off.
"Now, we don't recommend it, because we think people's iPhones are really important to them, and you never can tell when something is so urgent."