Instead of waiting by the mailbox, you can experience the thrill immediately by going to the Apple App Store or Google Play Store and downloading the Disney MagicMobile app.
The Disney MagicMobile service is taking over and Magic Bands are being deemphasized. They have not discontinued Magic Bands, but I suspect they will just fade away.
People without mobile phones can use plastic cards.
While Disney did make money selling bands and various add-ons for them, I'm sure they have run the numbers and it is probably more cost-effective to just use the app. Maybe they will sell some digital add-ons for the app. Pick your own Mickey skin for $19.99 or something.