Page 1: Old. It seems wrong to make Alexis's face more feminine in the 1st panel but not the 2nd, and to make the re-stated title appear to be part of Alexis's thoughts (it leads right into his first actual thought balloon) when it's more of Cassie's sentiment than his. (Granted, they could quite easily both be feeling that same thought, but she's the one who actually voices it later, and it's printed in her color instead of his.) Finally, the new placement of the title completely covers up that HUGE insult to Erica, and I love hidden subtle details like that.
Page 2: New. They both mention Nick by name, and the new one is slightly more informative about Nick's approach to their relationship—but less so about whether or not this was the first time he & Alexis had broken up. Perhaps this is another instance of Andava deliberately making certain details impossible to pin down.
Page 3: Old. The real change here is that the new page says Alexis finds girls' thong underwear very uncomfortable, and that he only cross-dresses for Nick's benefit—when we all know that almost every image of Alexis has him cross-dressed, even while Nick is completely uninvolved. I'd be more okay with such a major alteration to his character if I knew that it was going somewhere, but at the moment all I see is Andava trying to retcon the Andavaverse to water it down for prudes, and good fuckin' luck with that.
Pages 4 and 5: Mixed. Both of the new pages remove the detail that Darcy apparently "outranks" them at the school paper. My headcanon is that Alexis & Cassie are both taking Journalism 101 for the first time, as an easy elective to fill out their senior year—but Darcy is re-taking the class for credit, after having already passed it once, and the teacher has promoted her to "Editor". This is the kind of detail that adds richness to a story, and I'd be loath to see it go. So I'll let it fade away with the new Page 4, but only if the old Page 5 brings it right back.
Page 6: Old. The new door is consistent with the one shown on page 48, but inconsistent with the very next panel (where's the keypad unit that projects out over the handle?), the room number (is it 207, or 102?), and the building layout (the new panel shows a door in an interior hallway, but panels 2 & 3, and three of the next four pages, quite clearly indicate that this is an exterior door). The easiest fix is to use the old Page 6, and edit the two room numbers visible in the top panel of Page 48; there could quite easily be two different doors into this classroom, but it can only have the one room number. The 1st & 2nd panels of Page 6 still show different door handles, but I think I've been more than nitpicky enough already.
Page 8: New. It mentions Darcy being gone and sets up her "involvement".
Pages 10 and 11 (which are numbered 11 & 12, in the main post with the Darcy pages added): Old. The new pages show that Cassie knows significantly less about Alexis's relationship, and about Darcy, than she did in the old versions. Neither she nor Alexis mention Nick by name, and Alexis uses they/them pronouns, as if to disguise that he's talking about a guy. Leaving certain things unspecified (at least, as far as Cassie knows them) here does slightly broaden possible story ideas later on . . . but, in my view, it's not worth making Cassie into someone who's less aware of people, especially Alexis, and it also conflicts with the new Page 24 (page 26 in the main post).
Page 24: New. The only change is to explicitly point out that Cassie knew all along that Alexis was with Nick (directly contradicting the changes made to Pages 10 & 11), and Alexis does not react to this "revelation" that she already knew precisely whom he was dating. I think the old 10 & 11, and the new 24, is the stronger choice.
30: New, obviously, as it's just visual corrections.
I've placed the Darcy images to be a) right after Alexis calls her, and b) & c) evenly spaced between that point and Page 32, when we see the hidden camera. Initially, I read that camera to be Cassie's doing ("I have other planth for my Alexi'!"), but by positioning Darcy's b) "getting an idea" and c) "about to put it in motion" before we see the camera, it raises the possibility that it could be Darcy who remotely turned it on & started recording.