With the release of Blackbaud CRM version 2.93, the SDK includes an SSIS packages project template for extensions.
The SSIS packages project template can only be used with Microsoft's Business Intelligence Development Studio. The project templates for revisions extensions and OLAP extensions are accessible with Visual Studio 2010. Business Intelligence Development Studio is an enhancement of Visual Studio 2008. You can install Business Intelligence Development Studio alongside Visual Studio 2010. Microsoft explains here: Introducing Business Intelligence Development Studio.