This is a feature release.
It adds the ability to select multiple rows, and change the selection of these with a single click in the check box.
All lists with check boxes have this ability.
It is backwards compatible with previous versions.
Please ensure that you select the appropriate download file based on the version of SQL Server that you will be using.
If you have used the Denali installer from V1.4 for packages that you wish to now use the SQL 2012 release version, then you MUST manually edit the dtsx file and replace the text string MultipleHashDenali with MultipleHash2012