iPhone Duo 將預載 iOS 27.1，暗示 10 月更新時程

If Pencil support lands in the same drop, that’d be tidy.

Solid catch for readers watching software, not just aluminum.

Release notes will tell the real story.

Good reporting — small detail, big planning impact.

Devs need the 27.1 SDK bits early if Duo is serious.

Calendar math: announce → 27.0 → Duo+27.1.

Siri AI English-first plus 27.1 Duo is a lot of sequencing.

Foldable-specific bugs belong in a point release, honestly.

Day-one OS mismatch is annoying for people who want feature parity.

Worry that 27.1 becomes a Duo-shaped update.