Question about the mysterious ship that destroyed the Klingon and Romulan ships: is it a reference to something that was seen elsewhere or is it something new?
It looks familiar to me too. At first I thought about the time traveling shuttle in TNG A Matter of Time, or the tiny ship at the beginning of TNG Conundrum, but it's not any of those.
In fact, if you turn it upside down, it starts looking [very familiar](htps://startrek.website/pictrs/image /a753125a-ebb8-4c5c-805c
-56ae31 e76257.png).