I got the email and I have no idea which were removed.  Because they could be buried in my pages of rejections somewhere.

So I still have no answer how people have seen images removed, or a notice of which images, when Adobe says it wasn't going to start until today. If someone has a different link, so I can see where they are seeing changes and removals, I'd like to go look at mine.

Digging deeper i see the same as you, a coincidence batch with rejections (commonish now) but none that i can see removed previously.  The count is the same.
So i had the mail but so far have no images gone.

That said, the way AS is going i fully expect to wake up in morning and find 80% of my portfolio scrubbed due to the AI going wild.  Quite why they cant tell you which images will be removed or when is mystifying.

Has anyone had any images removed yet? If so, do they get buried under Not accepted or does Adobe specify which images got removed?

Yes, they get buried.  It is frustrating for somebody like me.  I have been uploading to them for close to 20 years and have several thousand online, and over a thousand rejected over the years.  Finding the ones that have recently been rejected would be like searching for a needle in a haystack.

I have received three separate emails from them about this over the past few months.  In each one, they include in the email a thumbnail of one of the photos that has been removed.  As far as I can tell from this, it is because they have different IP standards now than in the past.  I have re-uploaded two of the deleted files, designating them as illustrative editorial, and they were accepted.

I still haven't had any images removed even though I received the email

Senseless rejections caused by faulty and stupid technology. Contempt for skilled photographers, they prefer artificial productions now. The human is now absent to restore common sense, their blunders can no longer be contested (you will only get a stupid and robotic answer). Are there only idiots left at Adobe? They're pathetic.
Now I can only wish for their decline, the other agencies must win back their disappointed clients.

since yesterday i noticed these rejections. e.g. "chocolate on white background". i uploaded 3, 10 days ago. 3 accepted.
Yesterday 1 was then rejected for "similarity".
And today the other 2 rejected too for "similarity".
So.. none of the "chocolate" images is left accepted. lol that is weird. Multiple cases like that. Depressing.

And i noticed more rejections for "similarity" for images uploaded 5 months ago. Unique, but a batch of the same topic with same titles. But i don't know.

No images removed, I think they sent the email to everybody.

I just had one removed, the reason said it was against Adobe's guidelines. Don't know if that means it was because of duplicate content.

I got the email and I have no idea which were removed.  Because they could be buried in my pages of rejections somewhere.

Yes, absolutely buried.

I guess they're not too concerned with mass AI spam similars (unflagged as AI) if this profile is anything to go by:

https://stock.adobe.com/sg/search/images?creator_id=206533842&filters[content_type:photo]=1&filters[content_type:illustration]=1&filters[content_type:zip_vector]=1&filters[content_type:video]=1&filters[content_type:template]=1&filters[content_type:3d]=1&filters[content_type:audio]=0&filters[include_stock_enterprise]=0&filters[is_editorial]=0&filters[fetch_excluded_assets]=1&filters[content_type:image]=1&order=relevance&limit=100&search_type=pagination&search_page=1&load_type=page&get_facets=0

How many Oysters with fluffy meaningless, inaccurate AI descriptions to you need? Or cakes. Or errr well, you get the idea.

That's horrendously spammed portfolio. Yikes
How is this kind of garbage accepted???

The rejection rate is also beyond absurdism.
I have now almost 1700 rejected images, about 1000 since last 3 weeks.

Absolutely ridiculous since my earnings and downloads increased a lot the last weeks and the rejected images have all the same quality like my best sellers.

I just had another photo removed (happens daily now), that had been apporved over a year ago and the rejection reason is:

"Thank you for submitting your image. Unfortunately, we were unable to process your file. Contact us for more information."

This is absurd.

And if you contacted them, you'd probably get automated response with link pointing to common problems page that has no relation whatsoever to your issue.

I had just one removal, but I upload very little, 10-12/month on average.  But yes rejections are ridiculous.  That's probably not even because of reviewers (3rd party company).  They just got orders to "be very strict about quality" (or something like that).  So, in order to appear they are doing their job, they just reject left and right, maybe even without looking.