Apple is said to be planning fewer user-facing feature additions for iOS 9 and OS 10.11, putting a bigger focus on quality and polish.

Apple's major software releases for 2015, iOS 9 and OS X 10.11, will reportedly have fewer tentpole features for users than previous upgrades, with Apple focusing more on stability and security. Stability has previously been reported as a major focus or iOS 9, and the same now also said to be true for OS X 10.11, codenamed "Gala".

From 9to5Mac:

According to sources within Apple's software development departments, Apple engineers have been pushing executives for a Snow Leopard-style stability focus in 2015, following numerous bugs that clouded the launches of both iOS and OS X. Apple directors reportedly opposed a complete pause on new features, but agreed to focus on quality assurance by holding back some features that were initially planned for the latest operating system launches. One source explained, "I wouldn't say there's nothing new for consumers, but the feature lists are more stripped down than the initial plans called for."

Among the new features for OS X 10.11 is said to be Control Center, which first debut on iOS 7. Apparently coming over from the left side of the Mac's display, Control Center would offer Mac users quick controls for things like music playback, volume, and networking.

Apple is also reportedly making several security upgrades. A new, kernel-level security system called "Rootless" will help prevent malware, increase extension safety, and more on both iOS and OS X. Additionally, the company may be planning to move Notes, Reminders, and Calendar to sync with iCloud Drive for a faster and more secure experience. They may also include enhancements to Wi-Fi for increased security.

One of the more important reported changes surrounds older devices. While many expect A5-based devices like the iPhone 4s, iPad 2, and first-generation iPad mini to be passed over by iOS 9, 9to5Mac reports that this is not the case, with Apple optimizing the release to run well on these older devices.

Instead of developing a feature-complete version of iOS 9 for older hardware and then removing a handful of features that do not perform well during testing, Apple is now building a core version of iOS 9 that runs efficiently on older A5 devices, then enabling each properly performing feature one-by-one. Thanks to this new approach, an entire generation (or two) of iPhones, iPads, and iPod touches will be iOS 9-compatible rather than reaching the end of the iOS line.

Apple will also reportedly introduce a new major version of their Swift, installing its code libraries on iOS and OS X, meaning developers no longer need to include the libraries with their own apps, thus bringing down app size. They are also apparently holding off on building Swift-based versions of their own applications until 2016 with iOS 10 and OS X 10.12.

We expect to get the full rundown on iOS 9 and OS X 10.11 in just a couple of weeks during WWDC 2015. Both systems have been reported to including Apple's new San Francisco font, with iOS 9 also said to be bringing split-screen iPad multitasking.

You can check out the full report at the link below.

Source: 9to5Mac