From the press release:

Marvel is pleased to present your first look at the first chapter of Fantastic Four: Three, from superstar writer Jonathan Hickman and new series artist Steve Epting. This issue also features a stunning variant cover from the legendary Arthur Adams! The War of Four Cities has begun and by its end, one of the Fantastic Four will fall. Who will perish? The epic new Fantastic Four: Three starts in Fantastic Four #583 and it can’t be missed!

Preview:

FANTASTIC FOUR #583 (JUL100577)
FANTASTIC FOUR #583 ADAMS VARIANT (JUN108149)
FANTASTIC FOUR #583 SUPER HERO SQUAD VARIANT (JUL100578)
Written by JONATHAN HICKMAN
Penciled by STEVE EPTING
Cover by ALAN DAVIS
Adams Variant Cover by ARTHUR ADAMS
Super Hero Squad Variant Cover by LEONEL CASTELLANI
Rated A …$2.99
FOC – 9/2/10, On-Sale – 9/22/10

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2. Your First Look at Fantastic Four #581!
3. Five Page Preview of Fantastic Four #570, the Variant Covers, and the New Team Logo
4. Marvel Teaser Image: ‘Will the Fantastic Four Survive 2010?’
5. Check out Fantastic Four #570 and #571 for free on Marvel’s Digital Comics Hub