He should've just stuck with SAO, no point in diverting his attention to other project with the little time he has to spare.
CG
Maybe he worked on the Saekano game at the same time as SAO cause he needed to work on something else to not lose interest in developing SAO. Like I said some time ago, for some, it helps to step away and work on something else to be productive or get your imagination flowing again and not lose interest in the main thing you've been working on.
I'm still bummed as to the IRL sex seemingly about to start, but that's only cause in my head the progression of events doesn't make sense yet. Felt like she had to fall more in-game before IRL happens, but oh well. I am overall excited to also see the IRL sex scene if next update ends up focusing on that or not. It's probably possible there is a sex scene, because Fujino probably still views kissing and blowjobs to be the "dirty/corrupted" part of Asuna. Just because she does it in FOG doesn't mean she'll want to do it IRL. And I guess if Inoda wears a condom, Asuna will have sex instead of doing IRL blowjobs next update?
I don't think we'll get IRL sex anytime soon. Remember, Fujino probably changed how he wanted to end the game after doing some thinking during his business trip. Therefore, it's not too crazy (at least to me with this observation) that he's changed the CG of the title screen to match what'll happen at the end of this part, aka IRL sex (if we're going off of the logic that his title screen CGs foreshadow the very end of his games like in Part 1).
And as you pointed out, she's still showing a little resistance in FOG so she hasn't completely fallen in the VR world yet. It'd be way too soon if all of a sudden next update, Asuna starts having sex with Inoda IRL. Knowing how Fujino paces his games, this would be a huge acceleration to the story that'd feel rushed and frankly, poorly written.
There's no update last month because Fujino is on a business trip but that doesn't mean there's going to be a big update this month aswell
I think the update this month will be big. In the weekly report, he stated that he,
Finish the context before weekend of the new week
So it seems like the update at the end of this month, we'll be going through Mon-Fri. He added CGs to Leafa and Alice in the Underground Street and we know that FOG is in maintenance Mon-Wed, so I think it's safe to assume we'll also get some story on Thursday and Friday.