As of mid July, 2024, if you go to Western Digital’s own webstore front and try to add most of the WD NAS on the webstore, they will show as sales inquiry only.
Only QNAP NAS products are available to add to cart.
This should tell you that most of the WD NAS are likely to be discontinued.
The not too subtle hint on WD’s own webstore NAS front page with a QNAP as the center piece.
