The immediate frame (opened with /kt i) shows how many kills you've made since the command was issued.
The new mob database GUI introduced in v2.0.0!
How it looks without any session data
How it looks with some data
The KillTrack timer.
The progress bar (with % label) indicates how much time is left. I.E: When 2 of 4 minutes have passed, it displays as 50%.
What is shown when the kill threshold is reached. In the case Glamour is not installed, two yellow messages will appear on the screen instead.