The Nexus One gets an update from Android 2.2.1 (FRG83D) to Android 2.2.2 (FRG83G). Meanwhile, the Nexus S receives an update to 2.3.2. Both updates are bug fix updates, and both fix the SMS redirection bug.
Of course, those on other devices will still be affected, until a similar patch rolls to their device. It's unclear if this patch will break the ability to root a patched device.