Sorry if this has been mentioned in any of the other numerous threads that refer to these. I did a spot check, and couldn't find anything, nor do I shop that regularly at Ikea...
These appear to have popped up recently, after some concern that they were being phased out, altogether. That was premature, as all Ikea was announcing, was discontinuing the sale of all
non-rechargeable batteries at their outlets. The "old" white AAs were also 2450 mAh and cost $6.99/4, retail. The new ones have a new color scheme, and the price has gone up a buck for that same 4 pack. All else, seems to have stayed the same (especially, being manufactured in Japan).
There is general consensus that these are the equivalent of much pricier Eneloop Pros. I've used them for some time, as many here have, and swear by their reliability/value. Quite simply, if you use hi capacity NiMH rechargeable AAs, these should be your go-to
https://www.ikea.com/us/en/p/ladda-rechargeable-battery-hr06-aa-1-2v-50504692/https://youtu.be/TYNC-BcHlaA