Apple's iOS 26.3 release candidate has the tech world buzzing! Hidden within its code are hints of powerful new chips, potentially the M5 Max and M5 Ultra, which could revolutionize Apple's lineup. But here's where it gets intriguing: while the update lacks new features, it teases unreleased processing hardware. And this is the part most tech enthusiasts are eager to uncover.
The iOS 26.3 RC build, released on February 4, 2026, includes identifiers for two mysterious Apple chips. Given the close ties between iOS and macOS updates, it's no surprise to find the M5 Max chip mentioned, especially with the upcoming MacBook Pro models running macOS 26.3. But the real excitement lies in the potential M5 Ultra chip, which might debut with an upgraded Mac Studio.
MacRumors uncovered the T6051 chip, also known as H17C, and the T6052 system-on-chip, or H17D. Apple's naming patterns suggest that H17C could be the M5 Max, following the 'C' naming convention for previous 'Max' chips. Meanwhile, H17D might be the M5 Ultra, as its predecessors used the letter 'D'.
A curious absence in the iOS 26.3 RC is the expected M5 Pro chip identifier. This has sparked speculation about Apple's naming system for the M5 family. Did they change their internal naming conventions, or is there another explanation?
With the anticipated release of upgraded MacBook Pro models in February or March 2026, the mystery deepens. Will these new chips live up to the hype? The tech community eagerly awaits the official unveiling to find out.
