Yes, when connected to a host that also supports these higher resolutions, the TB4CDOCK can support dual monitors with resolutions up to 4K 60Hz, or a single monitor with resolutions up to 8K 30Hz, 6K 60Hz, 5K 60Hz.
Depending on the video port on the monitor, supported adapter/cables like these may also be required and are not included with the dock.
Monitor connection:
Note: the TB4CDOCK is not currently supported on Windows-based Thunderbolt 3 hosts.