Possible Duplicate:
When will my device get the Android 4.0 update (Ice Cream Sandwich)?

I know the version for T-Mobile (GT-I9020 or GT-I9020T) Nexus S has been available for download since December, but is there any information on when a similar update will be available for the AT&T/Fido/Rogers (GT-I9020A) Nexus S?