Are you a Nexus One owner? The latest Android OS 2.3 “Gingerbread” is out for Nexus one.
If you update your Nexus One to Gingerbread you can get all the features like Wi-Fi calling and NFC support. The Gyroscope sensor or front facing camera is not yet working due to hardware limitations.
If you are not getting the update notification you have to wait for awhile. But don’t worry there will be manual update. That is Android all about, the community will do their best to provide the manual update.
[via] Android Headlines