Nexus S is launched by Google,It is the second phone and successor of Nexus One.The most interesting part of this phone is that it comes with latest version of Android, 2.3 aka Gingerbread.
Nexus S is out but still Nexus One is not launched in many countries, So if you wanna update and know when Nexus S will be launched in your country then you can simply ask Google.
Just visit THIS PAGE and click on that big blue Signup button and then it will ask your email address and country.
Once you done it will notify you via email if Nexus S is launched in your country.
Some handpicked devices for you