Currently version 3.3.0 is used, which is a year old release and since then there has been some interesting improvements and fixes.

Now is also available version 4.0.0 which changes quiet a few things around.
One of them is the fact, that addons are now separate packages, so fit package cannot be loaded as is now.

This block cockpit team from upgrading to xterm-4.0.0 since patternfly react console needs xterm < 3.14