Caitlin McGarryStaff Writer, Macworld

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Caitlin covers Apple news, health and fitness tech, and social networks from IDG's New York bureau.

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PSA: Tim Cook is Stephen Colbert's Late Show guest tonight

Apple's CEO has new iPhones to sell, but we also expect some laughs.

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iPhone 6s and 6s Plus reportedly get 2GB RAM upgrade

Developer sleuthing turns up huge RAM upgrade for new phones.

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Apple says iPhone 6s sales will beat last year's record

The company expects to sell more than 10 million iPhone 6s and 6s Plus units on launch weekend.

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How, when, and where to preorder the iPhone 6s and 6s Plus

Preorders start tonight. Time to strategize.

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iOS 9.1 beta brings a taco emoji to iPhones at long last

Beta testers can also train Siri to recognize their voices.

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Everything you need to know about iPad mini 4, a thinner, lighter, multitasking machine

All of iOS 9's multitasking features will run on Apple's smaller tablet.

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New iPhones have smaller batteries, but battery life will stay the same

Apple had to make room for the Taptic Engine, so the iPhone 6s battery is shrinking.

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New iPhones are here: iPhone 6s and 6s Plus debut with new 3D Touch displays

Apple reinvented the multi-touch display for its new iPhones.

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iPad Pro rumors: 12.9-inch tablet may not ship until November

Apple's new tablet might compete with MacBooks to help you get work done.

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Meet Specimen, an iOS game that proves you can't see color as well as you thought

Specimen uses art and science to challenge your eyesight—and it's set to a funky groove.

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My running gear: Griffin LightRunner, MilestonePod, and Sensoria Smart Bra

These workout accessories are helping me run faster, better, and smarter.

Apple Music debuts June 30 — all the ways you love music, all in one place.

Everything Siri can do for you in Apple Music

Siri integration is something no other streaming service offers. Make the most of Apple Music with these tips.

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Apple Music loses key exec as former Beats Music CEO resigns

Streaming veteran Ian Rogers created the popular Beats 1 radio station.

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Hey Siri, give us a hint: Apple's iPhone event is Sept. 9

Siri is playing coy about what to expect at the event, but we have a few ideas.

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Best Buy is an Apple Watch believer after strong early sales

The chain will start selling the watch at all of its stores by the end of September.