It is said that while the technology giant will remain committed to a software update annually, the update in autumn will lack a number of features.
According to Bloomberg, a new strategy by Craig Federighi, head of software, will mean there will not be an update for the photos app, and the home screen will also not be redesigned.
The new system should allow developers more time to focus on the new features, rather than rushing them to meet the annual release cycle.
A source said: "This change is Apple beginning to realise that schedules are not being hit, stuff is being released with bugs - which previously would not have happened."
Despite this, new features are still expected later this year - such as apps being able to work across iPads, Macs and iPhones.
Other potential features include a digital health tool, which would allow parents to keep an eye on their children's computer use.
The change in tactic comes after iPhone sales fell towards the end of 2017, despite Apple pulling in record revenues.