I went into our local Walmart (grocery section) and found that all the price tags for all items were replaced with small and color E-Ink tags. Presumably they can now automatically update prices (which might not be a good thing). Most of the tags were just black on white (or light grey) but, if the item was on sale, there was red bar highlighting the sale price. What really surprised me is that these E-Ink tags were even in the freezers. They must be a bit different than the E-Ink screens in eBooks.
Looking online, I see this change-over started in June of 2024. I guess it just got to our local Walmart.
https://corporate.walmart.com/news/2...and-associates
Probably not that big of a deal to most. It was just weird that the last time I was there (a couple days ago) there were none of these tags, and now that's all there is. I'm personally happy to see them, because half the time the paper tags were either missing or had the wrong price (in other words, weren't updated).