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Apple references unreleased iMac models in macOS Big Sur 11.3

Mar 24, 2021

Apple references unreleased iMac models in macOS Big Sur 11.3

The leak: Apple has revealed the existence of 2 new iMac models in macOS Big Sur 11.3 beta 5, according to 9to5Mac (77.2% accurate).


  • Both “iMac21,1” and “iMac21,2” were spotted in the latest update and correspond to J456 and J457, the codenames for Apple’s next desktops
  • Mark Gurman (89.1% accurate) says the new iMacs will likely be coming a bit later in 2021, but Apple has recently made a number of moves that seem to indicate a more imminent launch

Our take: This comes on the heels of references to the new iPad Pros in the latest iPadOS beta. Something tells me we won’t be waiting until Fall for these new iMacs.