That is indeed the old Mandel script; it reads "There is honor in death" (in English).I think the old type face showed up in a couple scenes (or maybe it was just marketing)
I think the carvings on the D'k tahg, and the Torchbearer's EV suit used the classic typeface, but that isn't really noticeable on screen, only on closeup shots on display.
![]()
Maybe the old typeface has been retconned to be a classical style, or something fancy like cursive.
However, they have also used the classic pIqaD script used by many Klingon-speakers, as well as several new fonts. These texts have used proper tlhIngan Hol (at least for the most part; there might be some exceptions, depending on which department did the text).