Considering that the invite came from the semiconductor arm of Samsung, the thinking is that this will be an announcement related to new health-related sensors, as opposed to being a new product introduction. The invitation teasingly says "Be there when it starts." Samsung states that the event will begin at 10:30am PDT on the 28th of this month.
Circle the date on your calendar. As soon as we know what the event will be about, you'll know.
Samsung is holding a health-related event on May 28th