Canon USA has unveiled its inaugural 8K broadcast lenses, the UHD-DIGISUPER 51 and 7x10.7 KAS S attachments. The company is pitching them at the capture of live TV in this UHD resolution. They also have an image format size that could become standard for the same.
https://www.notebookcheck.net/Canon-introduces-the-first-2-of-its-8K-broadcast-grade-lenses-to-the-US-market.442574.0.html