For the most part, the majority of over-ear headphones tend to feature circular or oval earcups. However, if the photo and video is accurate, Apple could be opting for a rectangular-shaped set of earbuds. This is definitely not the convention, although it has been done in the past with headphones like the Bowers & Wilkins P5.
Apart from the not-so-standard earcups, the rest of the headphones look pretty normal where they feature a padded headband with a gray mesh, which according to @choco_bit is the same mesh fabric that Apple uses for its HomePod speaker. Whether or not that will make for a comfortable pair of headphones remains to be seen.
https://twitter.com/choco_bit/status/1306266803182727168
That being said, these headphones could very well be the first pair of over-ear headphones made by Apple. The company has typically dealt with earphones in the past, unless you count the Beats brand that they acquired. There’s no word on its release yet, but there’s a good chance we could learn more about it during Apple’s iPhone event this October. Until then, take it with a grain of salt.