Google today made Nexus S official with latest version of Android 2.3, Gingerbread and for developers, the Gingerbread SDK/NDK is also available. The Nexus S is the first device ships with the new Android version. Nexus S is developed in collaboration with Samsung.
The Nexus S features 1GHz Cortex A8 Hummingbird Processor, 16GB iNAND flash memory, $.0″ WVGA (480X800) Super AMOLED capacitive touch sensor, Quad-band GSM, HSDPA(7.2Mbps), HSUPA(5.76Mbps), Wifi, Bluetooth 2.1 NFC, A-GPS, Micro USB 2.0 and 3.5mm headset jack, Backfacing 5Megapixel camera and front facing VGa camera for video calling. It is powered with 1500mAH Litgium Ion battery can provide 6.7 Hours of Talktime , 17.8 days of standby time on 3G.
Backstory video can be seen here
Source: Google Blog