After some confusion last week, AT&T has confirmed via Twitter that their version of the Samsung Galaxy S II will launch on October 2 for $199 with new 2-year contract. AT&T’s version stays true to the international design, with the addition of NFC, a faster 1.2 GHz dual-core Exynos CPU and support for 4G HSPA+.

For an idea of what to expect, check out our hands-on with the Sprint Samsung Galaxy S II, Epic 4G Touch. AT&T’s version has a slightly smaller display (4.3 vs 4.5 inch) and battery (1650 vs 1800 mAh), which allows it to be the thinnest US-bound Galaxy, measuring 8.89mm.

AT&T customers have some exciting phones coming out soon with the HTC Holiday and Motorola Atrix 2, so they face a tough decision. If you’re on AT&T and looking for a new Android phone, which one are you going with?