Apple is expected to unveil something different today in San Francisco at the World Wide Developers Conference.

VentureBeat's Dean Takahashi says Apple is toying with a new initiative.

"There's speculation about Apple entering the smart home monitoring business, just like Google has," he said. 

Takahashi says a new Apple update for it's mobile operating system is expected to be the Healthbook app.  

It would allow users to track health-related metrics and healthy habits.  

The app would likely be a key part of Apple's smartwatch if and when the multi-media giant decides to unveil one.