The latest addition to the line is the new Mighty Angus with Jalapenos, which pretty much a premium version of the Jalapeno Double.
Besides the Angus beef patty and sesame seed bun, the new burger comes with hickory-smoked bacon, creamy barbecue sauce, jalapeno slices, jalapeno crisps, and a slice of "Monterey Jack" (it looks like Pepper Jack to me; maybe Canadians use a different name?).
The Mighty Angus with Jalapenos is available at participating McDonald's locations in Canada for a limited time only.