The email reply:
We will not be able to offer an exchange for the DIR-868L from the Rev B to Rev A. We have replaced the DIR-868L Rev. A in Canada, and we will not be able to offer any replacement stock with the older version. The features added in the recent firmware upgrade to the Rev A are not advertised on the Rev B box. We have passed your comments to our Product Management team, and they working on possibly adding the Bridge mode feature to the Rev.B at this time.