The writing within the episode would seem to imply as much, though comments Matalas has made online seem to suggest otherwise. The impression I get is someone stepped in late in the game and reminded everyone about the Titan being on Lower Decks and there was a mad scramble to try to smooth everything out with limited time.I’ve watched the first episode twice now, and it’s even more clear to me that the PIC producers want the audience to believe that this Titan is the same ship as the one that went unseen in Nemesis. The ‘refit’ statement is just a way to side-step the issue that we’ve already seen a much different-looking version in Lower Decks. I believe their thought process is that their audience is coming right off of Nemesis when watching this show, and are not the same audience watching Lower Decks. None of these shows are really in continuity with each other, and the producers know this.
Actually, not the Luna class but apparently some other Titan, from the early 24th century which was apparently commanded by Saavik.Isn’t it stated by someone (I forget who) that the “refit” is a reference to the interior frame of the Luna Class still being in there somewhere? It’s a really spurious explanation but it’s one nonetheless.