I saw it as a Please look forward to the third act., myself. Matsuno-san doesn't strike me as the kind of storyteller that adds
It is believed that the legatus had sustained injuries in battle with the Dalmascan resistance and was recuperating at the time, and that after an exchange of words, Gabranth accepted his fate before Lyon delivered the fatal blow. The assassin then set the room ablaze before fleeing Castrum Valnaini with his accomplice.
with the intent that it be closure; that looks like laying groundwork, lol.
Especially with the specific time-push in them notes, something the MSQ has yet to ever do in non-vague terms.
Curious if that delay has anything to do with lampshading the time we'll spend completing 6.0, lol.