Elon Musk will take to the stage next month to show off a new offering from Tesla Motors that he says isn’t a car. The electric carmaker is apparently branching out, but to what?

Musk got on Twitter Monday with a vague tease about a new Tesla product line that will be launched April 30 at their Hawthorne design studio near Los Angeles. But that’s where the details ended.

Tesla has already had car-related news in March. Two weeks ago, Musk promised to “end range anxiety” with a software update for the Model S, as well as reassuring investors we’d see the Model X in production form this summer. But what could this non-car product be? Clothing? Travel mugs? Watches?

We’ll find out 8 p.m. April 30.