Apple releases iTunes 12.5.1 with all-new Apple Music design, iOS 10 support, and Siri commands in Sierra
What's New? Juli Clover / MacRumors : Apple Releases iOS 10 With Redesigned Lock Screen, New Messages Features, Third-Party Siri, and More Brian Fagioli / BetaNews : Apple ‘Swift Playgrounds’ coding app now available for iPad tablets running iOS 10 Romain Dillet / TechCrunch : iOS 10 review: the coming of age of apps Bryan Clark / The Next Web : More iOS 10 woes: Some users can't sync music between devices
Context & Ripple Effects
The desktop client has been playing catch-up since Apple Music launched in mid-2015 through iOS 8.4 and iTunes 12.2 — the Mac got the service first, but the redesigned interface arrived on phones before it did on desktops. Today's iTunes 12.5.1 closes that gap, shipping the all-new Apple Music layout to Sierra alongside the iOS 10 rollout Apple previewed at WWDC in June (developer preview then, public beta in July, final release this fall).
The pairing matters because it makes the redesign a cross-device event rather than a mobile-only refresh: the same Library/Browse/For You structure now spans Mac and iPhone on day one, with Siri commands extending it to voice on the desktop.
First-order effects
- Mac users on Sierra get the redesigned Apple Music plus Siri playback control for the first time, while anyone upgrading to iOS 10 must move to this iTunes version for device support.
- Some upgraders immediately hit a downside: reports of music failing to sync between devices after the iOS 10/iTunes updates.
Second-order effects
- The redesign becomes Apple's template across platforms — the company later ports the same iOS 10-style structure to its Apple Music app for Android, so Spotify and Google Play Music face a consistent Apple interface on their own turf.
- Sync breakage pushes affected users toward Apple Music streaming over local libraries, nudging the customer base toward the subscription the redesign was built to sell.
Third-order effects
- If the pattern holds, major Apple Music redesigns will keep riding OS release cycles rather than standalone app updates, tying the service's evolution to hardware upgrade season — and leaving iTunes as an incrementally re-skinned hub rather than a rebuilt product.
The trend: Apple is converging its music experience into one design language delivered through OS releases across macOS, iOS, and eventually Android, with Siri as the shared access layer.