iPhone XS and XS Max in silver, space gray, and gold.
iOS 12 Users Running Current Beta Plagued With Popup Prompting an Update
Affected users are seeing the following message: "A new iOS update is now available. Please update from the iOS 12 beta." The problem is users receiving this message are running the most recent version of iOS and there is no additional software to update to.
Beta testers have been seeing this popup since the latest beta was released on August 27, but over the course of the last day, the popups have become much more frequent.
Many users are now seeing the popup every time an iPhone or iPad running the beta is unlocked or Notification Center is dismissed, and it is a popup that must be manually dismissed each and every time before an iOS device can be accessed.
Developer Guilherme Rambo has suggested that an error in the latest update causes the iOS beta to think that its expiration date is imminent, leading to the popup problem.
It looks like this method in Springboard does some date/time calculations to determine if the current build is about to expire, every time the cover sheet gets dismissed. For some reason, the latest builds of iOS 12 think they're about to expire. (@davedelong :P) pic.twitter.com/HWe7C0NnIT— Guilherme Rambo (@_inside) August 31, 2018
Complaints on Twitter and the MacRumors forums are picking up from users who are frustrated with having to continually dismiss the popup, and it's not clear when a fix will be available.