Canon USA with Brent Ramey On the XF400 & XF405, Shows “Spring 2018 Firmware Update” with XF-AVC (MXF) Support for 4K UHD, 1080p, 720p up to 60FPS and Full HD Recording to 120FPS including Flicker Reduction for Artificial Light Situations.
From Canon USA:
For More information On the XF400: Firmware Update
For More information On the XF405: Firmware Update
From VIA: Canon USA: