Snirgeu

Yes, I was approved eight days after they received the exam. 

As far as I understand AOS is available but i508 will need to be included as well. 

Of course. But 71% of K3s getting denied 88 days later feels to me like it was due to I130 being approved and not because 71% don't meet the requirements.

I think I've stumbled across a way to speed it up. Just got AR2 yesterday and approved. 
 
I'll write a separate thread on what I THINK I found out. 

Now, after the I-130 has been approved, even if we do end up deciding to AOS, no new I-130A will be required obviously...  

Yeah that's what I did, but I did it from my phone so perhaps that's why it did not work.
 
Now it works on my computer.
 
Agreed re the typo correction reason. I just asked for a typo correction on the website through the account. More often than not, online filers will have some kind of typo to request because if they look at the PDF they'll see that the system screws up certain things, not least the addresses (cannot write present online, so for instance for my current address I had to put in my date of filing as the "TO" date for the address instead of writing present. That could be a reason for a typo request...

But yes, obviously, you would need a typo in order to ask for one

I think I've stumbled across a way to speed it up. Just got AR2 yesterday and approved. 
 
I'll write a separate thread on what I THINK I found out. 

Looks like there are a LOT who got AR on or about February 20, 2022. From a number of service centers too. Seeing this on facebook groups as well.

Just got AR. 144 days after filing Sept 29 2021.
 
K3 sent Dec 16 2021.

USC

So we called the visa services offices at the university. 
 
All spouse needs is the receipt notice for I-485.
 
Then was asked if he will be receiving funding and the person on the line mistook our affirmative answer to mean that it is a PhD with a stipend. For that EAD is needed. 
 
Most interesting bit was that we discussed F1 while pending I130 and the guy said that they are always nervous about that but in the 12 years he's been at the visa services office, there were many F1 visas issued to pending and even approved I130 beneficiaries and not one has been denied yet. 
 
Presumably this is because it is one of the top universities in the country where people go to advance their careers in a way that shows how big of an opportunity it is, and it is a serious institution and not a facade just for immigration intentions. 
 
So our options are finish the IR1 process of course, adjust status from L1, or try for an F1 and present our case. 
 
I will say that I know of someone who got an F1 after an approved I130 after having been accepted to graduate stiludjes in Columbia. He came back during winter break to do the interview and completed the process and did not adjust status.