HealthKit enables a user's various different health apps to share data. It also allows for developers and healthcare providers to enable access to a user's health information on their iOS device.
For example, a person could enable the Health app to pass critical information onto a their physician in case of an emergency. It also acts as a hub for a person so that all of their health information can live in one place.
Currently, there are apps that can do everything from monitor a person's activity levels to their weight and even chronic medical conditions, said Craig Federighi, Apple's senior vice president of software engineering, at the event. But people need a way to bring all of that information together, he said.
"That information lives in silos. You can't get a single comprehensive picture," he said.
As for the connected home, the company announced a platform called "HomeKit", which is also part of iOS 8 and aims to make the iPhone a remote control for the connected home. The company didn't elaborate too much on its push into home automation, however, it was announced that it has been working with partners for some time.
Read MoreIs Apple planning an iWatch for 2014
Robert Luna, SureVest Wealth Management CEO told CNBC that Apple is essentially in a race with Google over what he called "share of your life." Both companies are looking to control "your home, your health care, your car," he said.
Apple also announced a long list of other updates for its operating systems, but it didn't reveal any hardware updates that some were expecting. But that may not be enough for investors, said Colin Gillis, senior technology analyst and director of research at BGC Capital.
"Investors want to see new categories coming out of Apple, and not just catch up features from iOS or from their OX S. in fact, they actually need to start thinking about merging those two operating systems at some point," Gillis said.
"We're all waiting for the next great piece of hardware, and today was all about software," said John Malloy, co-founder of the venture capitalist firm BlueRun Ventures, told CNBC.
"If you're a consumer...you didn't really hear anything that lit you up to go out and buy the next great thing," he added.
Many of the new features in iOS 8, which is the mobile operating system for iPhones and iPads, focus on messaging.