Apple's home hub appears twice in shipping code: one with a base, one for the wall

Apple seeded a release candidate for macOS Tahoe 26.7 that contains references to several unreleased products, from home devices to iPhones, iPads, AirPods and Macs, according to MacRumors ^[1]. For anyone building accessories, integrations or HomeKit-adjacent products, the useful detail is not that a home hub exists but that the code appears to name two physical versions of it ^[3][4].

MacRumors reports strings for Siri setup on a "J490" home accessory, previously identified as Apple's upcoming home hub, plus a second reference pairing J490 with J491 ^[3]. J490 is believed to be the version with a base and J491 the wall-mounted version ^[4]. A separate string says "Argentium" has been installed on a product codenamed B525, which likely corresponds to a new HomePod mini; the current HomePod mini is B520 ^[5]. There is also a "J229Architecture" reference ^[6]. J229 surfaced in iOS 26 last December, and Macworld described it then as a device with multiple sensors that can detect alarm sounds and capture images ^[6]. MacRumors says it could be the rumoured security camera or an accessory that pairs with the hub ^[7].

Around those are the supporting parts. "Pebble" appears, which Bloomberg has said is Apple's codename for homeOS, the operating system that runs on the home hub ^[8]. Two new model identifiers, HomeAccessory17,2 and HomeAccessory17,3, show up with no clear mapping ^[9]. There are colour references for a home accessory: Rose Pink, Silver, Space Gray and Starlight ^[10]. And there is an audio_accessory_visual_reasoning string that could belong to the hub ^[11]. Counting only the hardware identifiers, that is six distinct home-device names in one build, though some may be model numbers for the same units ^[12].

Now the discount. MacRumors notes that some of these codenames have appeared in earlier updates and are showing up here with new feature flags, which is the part worth tracking ^[2]. But the build itself is housekeeping: 9to5Mac reports macOS Tahoe 26.7 (25G220) shipped as a release candidate alongside macOS Sequoia 15.8 (24H16) and macOS 27 developer beta 6 ^[13], with release notes that promise only security fixes ^[14], and no expectation of new features because Apple's attention has moved to macOS 27 Golden Gate ahead of a release in a few weeks ^[15]. Codename presence in a maintenance train is not a launch date.

The same file makes that point better than any caveat. It names the iPhone 18 Pro and 18 Pro Max, expected in September, and the foldable iPhone Ultra, also expected in September ^[16], next to the standard iPhone 18 and the iPhone Air 2, neither expected until spring 2027 ^[17]. That is a spread of roughly six months or more between products sitting in the same code ^[18].

What to watch: whether HomeAccessory17,2 and 17,3 pick up feature flags in the macOS 27 Golden Gate betas, and whether J229 acquires strings tied to sensors or capture rather than architecture alone. Colour lists tend to firm up late ^[10], so treat Rose Pink and Starlight as a sequencing hint rather than a shipping SKU. And note that the code habit cuts both ways: N109 is still present, which Bloomberg called a second-generation Vision Pro and The Information called a cheaper model that was reportedly cancelled last year ^[19].