Microsoft was introduced SQL Server Integration Services (SSIS) the first released with SQL Server 2005 and replacement of DTS (Data Transformation Service in the standard edition.
Microsoft has released the second edition with a couple of features with SQL Server 2008. As you see the below list of features like improved scripting (VSA to VSTA 2.0) , Data Flow performance and scalability, upgraded ADO.NET support, import and export Wizard feature, lookup Transform Cache feature, Data Profiling Task and improved memory dumps.
The currently released the recent version more features with SQL Server 2012.
SSIS Evolution Table
This post will help to know new features and respective version in SQL Server.