Interesting, this comment is the first I've learned/noticed that Apple Cash switched to the Visa network. As an Apple Cash user for some time (via the Apple Card and its Daily Cash), previously the Apple Cash card was on the Discover network and that limited its usefulness somewhat because Discover as a network is accepted by a lot fewer vendors than the top 2 of Visa/Mastercard. It's nice to know that it switched to the more common network.
(Also a neat part of a virtual card: checking in the Apple Wallet I can see that the card already switched numbers/networks for me. I don't need to wait for a replacement card. If not for this comment I wouldn't have even thought to check if it had switched, just transparent in the background. I probably got an email on it I ignored if I had wanted to know sooner, but there are so many emails.)