Samsung has also highlighted its efforts in the connected health space. At a media event in San Francisco last week, Samsung said it would provide developers, hardware makers and medical professionals with a platform that would push forward the idea of “intelligent digital health.”

Image The Internet-connected Philips Hue LED light bulb set can be controlled by an iPhone.

Apple investors and fans who are clamoring for the company to introduce new hardware categories, like a so-called smart watch or connected television, will probably have to keep waiting. On Monday, when the event’s keynote address is given, Apple is expected to focus on new versions of its mobile operating system for iPhones and iPads, known as iOS, and for the Mac operating system, OS X.

In the past, Apple’s weeklong software developers’ conference was occasionally an arena for unveiling new hardware. But Apple more recently has reserved major hardware announcements for the fall and winter to aim for the back-to-school and holiday shopping seasons.

Apple is also expected to show the next version of its Mac operating system, OS X 10.10. The overall aesthetic will more closely resemble the “flat design” of Apple’s iOS 7, which introduced thinner typography and more saturated colors, and also removed textures that made some apps mimic real-life objects.

Reports surfaced a week ago that Apple would push into connected home devices, and details on Apple’s health app leaked months ago. Some software developers who kept up with the rumors had mixed reactions.

Julian Walker, a founder of the app start-up FiftyThree, which is based in New York, said he was skeptical about smart-home-device makers jumping on board with Apple. He said Apple had been a tough partner for companies to work with because it imposed strict requirements on them.

For example, Apple began losing its grip on companies that made iPod speakers and docks when it switched the connector on its iPhone to a new port, the Lightning connector. Instead of making new hardware compatible with Lightning, many companies decided to develop accessories using a wireless connection, Bluetooth, that could be used by all kinds of hardware, including Apple and Android devices.