https://arstechnica.com/gadgets/2021/04/apple-rejects-apps-breaking-new-privacy-rules-hinting-ios-14-5s-release-is-near/

Apple has begun rejecting app submissions that do not follow its updated privacy policies regarding device fingerprinting and user tracking, according to a report in Forbes. This move strongly suggests that the release of iOS 14.5—and possibly new hardware products—is imminent.

Here's a snippet from the rejection letter some developers told Forbes they have received: