Not that I have seen or could find.
It was announced 5Dec2023 in the News Headline here:
Update to US referral and Fulfillment by Amazon fees (link)
"…
Finally, we will expand the returns processing fee to apply to high return-rate products in all categories, excluding apparel and shoes. This fee will address the operational costs of returns and reduce waste. The returns processing fee will only apply to products that have the highest return rates relative to other products in their category and will apply starting June 1, 2024. Existing returns processing fees for apparel and shoes will remain unchanged on average. Go to the Returns processing fee page for more details.
…"
The applicable SHC (“Seller Help Content”) page is 2024 returns processing fee changes (link).
It was also announced in Dharmesh Mehta’s 5Dec2023 “About Amazon” blog post here:
It was also referenced in Cruxfinder’s 12Dec2023 edition of Amazon Seller News #293, with the Subject Line “Brace for Higher FBA Fees in 2024” (admittedly, obliquely).
There’s a reason why I archive everything.