Samsung event for May 28th to focus on health
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.