There is quite a large Android hacking community out there though, with a lot of custom versions of Android. Even 2.3 is available for the Galaxy S unofficially already and the hackers add their own features to the OS, although as they are never specifically versions from the phone maker some feaures are sometimes disabled. But if you have a phone without any official 2.2 or 2.3 update available then it is an option worth invetigating to keep an old mobile going.