System of a Down posted the following photo on their Facebook and Twitter pages.

The Deftones also tweeted a photo (pictured below) with the same “Announcement coming Monday.” message.

Are System of a Down and the Deftones embarking on a tour together?

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System of a Down pleased to announce that they will be headlining this year’s Heavy MTL Festival in Montreal, QB and Heavy TO Festival in Toronto, ON.

Weekend passes are now available. Click HERE to purchase weekend passes to Heavy MTL, and HERE to purchase weekend passes to Heavy TO.