Currently, there is no public trial version of iOS 16.4 available. This version is expected to be released either later this week or the following week.

iOS 16.4 beta 1 is exclusively for registered developers. Developers can update to iOS 16.4 by accessing
Settings, selecting
General Settings Configurationthen select
Software Update. The build number for today's update is 20E5212f.
Alongside iOS 16.4 beta 1, Apple has also released:
- watchOS 9.4 beta 1, build number: 20T5222g.
- tvOS 16.4 beta 1, build number: 20L5463g.
- macOS Ventura 13.3, build number: 22E5219e.
iOS 16.4 is set to introduce a plethora of features that Apple has announced but not yet released, as well as features still in development.
- Apple Card Savings Account.
- Apple Postpay Wallet.
- Classic Apple Music.
- Customizable Assistive Mode.
- New Home Screen Layout.
- Push Notifications for Websites.
