It seems that Microsoft will not improve the slow SCD component that is part of SSIS (at least, this is what I understand from this Microsoft Connect answer). This means that TableDifference has a long life because it will be useful even in SQL Server 2008.

The versione 1.2 beta of TableDifference still needs some test because there is a latent bug on blob fields processing (in some multithreading scenarios).

Originally appeared on: http://sqlblog.com/blogs/marco_russo/archive/2007/07/09/long-life-to-tabledifference.aspx