As is traditional in the days before WWDC, compatibility lists leak out. This time, the HomePod Software 26 list is out, with a surprise.

New HomePod (left) internal layout versus old (right)

New HomePod (left) internal layout versus old (right)
There have been almost no rumors about the September 2025 revision to the HomePod software, other than it being probably called HomePod Software 26. However, what devices are compatible was not leaked before Friday’s post.
Before this leak, saying that all HomePods ever shipped are compatible, we’d have guessed that the original HomePod that shipped in 2018 would have been dropped off the compatibility list. After all, it was announced at the 2017 WWDC, shipped in February 2018, and uses the A8 processor found in the Apple TV HD, but nowhere else.