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Leaked Apple Files Point to M5 Max iMac Under Test

An internal kernel debug kit ties an unreleased iMac to Apple’s M5 Max platform, though reporters caution it may be a test-only configuration rather than a product bound for retail.

Overview

  • Entries in the leaked software reference an iMac labeled J833c mapped to platform H17C, which is associated with the M5 Max codename "Sotra C," indicating active internal testing.
  • MacRumors and others note these engineering files also list validation-only devices, so the presence of an M5 Max iMac does not confirm a commercial launch.
  • The same leak outlines a 2026 Mac lineup that includes M5 Pro/Max MacBook Pros, M5 MacBook Airs, M5 and M5 Pro Mac mini models, M5 Max and M5 Ultra Mac Studio variants, and a budget MacBook with an A18 Pro chip.
  • The code does not reveal display size or other key specifications for the iMac, and Apple has not announced pricing or timing.
  • If it ships, the machine would represent Apple’s first high-end all-in-one since the iMac Pro was discontinued in 2021, aligning with prior reports from Mark Gurman and Ming‑Chi Kuo about a pro-oriented iMac.