Apple will release iOS later this year. Source: Apple.

It's been a few weeks since Apple's (NASDAQ:AAPL) unveiling of iOS 8 at the company's worldwide developer conference. While Apple execs highlighted some of the biggest features of the new operating system, like Apple Health, other notable features have sat under the radar.

Apple's latest versions of iOS are typically well received and quickly adopted by iPhone users, and the OS plays an important role each year in luring new and existing iPhone consumers to new purchases.

Apple's new iOS 8 won't be the transformation we saw with iOS 7, but new features and apps will certainly play an important role in in pushing new iPhone sales. So let's take a quick look at eight "hidden" features you may not know exist in Apple's upcoming mobile OS.