Wired
Regarding the iOS 17.5 beta test, which was expected to start soon after the release of iOS 17.4 but has not yet materialized, the development of beta 1 for developers and public beta will be completed next week, and the beta test will be completed on April 8th. It was reported that they are expected to be released this week.
Beta testing of iOS 17.4 started two days after the official version of iOS 17.3 was released.
iOS 17.5 beta test with delayed start date
Developer beta 1 and public beta of iOS 17.5 were expected to be released soon after the official version of iOS 17.4 was released.
During this time, new builds of iOS17.4.1 and iOS17.4.1 have been released.
Last major update and predictions for iOS17
Apple is expected to hold the Worldwide Developer Conference (WWDC24) in June and announce iOS 18.
Supercharged says that iOS 17.5 will be the last major update for iOS 17 since beta testing of iOS 18 will begin after the announcement.
iOS 17.4 includes compliance with the Digital Markets Act (DMA) enforced in the EU, but it is thought that there are not many new features or changes in iOS 17.5.
Source:Supercharged
Source: iPhone Mania