The new Android 15 beta introduces a feature where users can select a default wallet app for various functions like contactless payments, managing digital car keys, and store loyalty cards. The default wallet app selection is currently limited to Google Wallet, None, and American Express, hinting at the potential for other third-party wallet apps to join in the future. However, there is a bug affecting the NFC settings page in the beta, which may impact the functionality of features like Google Wallet and digital keys. Despite this issue, the Android 15 beta also brings enhancements such as improved app archiving, heightened security measures, and fresh accessibility features.