Apple rolled out iOS 10.3 on Monday, March 27 and the release was nothing short of awe-inspiring. Highlighting a newfangled file system, the update brings in an array of radical changes, many of which are undocumented.

Apple engineer Renaud Lienhart‏ recently spilled the beans about one such change. Lienhart‏ is part of the team that works directly on the iOS operating system. He recently took to his Twitter handle (@NotoriousBUGS) to reveal that the iOS 10.3 feels faster as a bunch of animations were adjusted and shortened to some extent "for the better."

Quite a few of the animations that the Cupertino-based tech titan uses in iOS show up when a user either launches or exists an app or even switches between them. Although, while conducting his own testing, Lienhart‏ says he did not notice any sort of striking difference between the older 10.2.1 device and a recently updated 10.3 one, he found iOS to be slightly more responsive especially during overall daily tasks on his iPhone 6S+.

Apple's latest file system in iOS 10.3 will be coming to several iPhones and iPads, speeding up the OS a bit, too. Moreover, since APFS is created to be low latency, the read and write speeds on iOS devices should see a considerable improvement as well. There's a possibility that the changes might not be evident immediately; however, apps that write umpteen data to a disk -- for instance, video processing, might seem speedy.

Aside from that, iOS 10.3 could help amend several skips, frame drops, and interface bugs in iOS 10. Chris Pirillo detailed most of the problems with iOS 10, claiming that the company did not deliver a smooth 60fps for iOS despite guaranteeing it. Nevertheless, the tweaks in iOS 10.3 imply that Apple is at least focused on improving its iOS animations.

Meanwhile, those looking to upgrade their devices to iOS 10.3 should bear in mind that the new operating system is unusually slow, AppleInsider reported. Unlike major releases that are usually several gigabytes, the update is only 600MB, but installing it could be quite laborious.

For instance, the Apple iPad Air 2 takes around 50 minutes to be updated to iOS 10.3, meaning, iPhone 5 and iPhone 5C owners might have to wait even longer for the installation to complete.