Another great announcement look here for more details.  I think this is fantastic news.
On Tuesday 25th April we announced at the Hyperion Users Conference the following four areas of collaboration with Hyperion.
• SSRS reporting from Essbase
• HYSL System 9 Workspace including SSRS report data
• HYSL System 9 reporting from SSAS
• SSIS as an ETL tool for HYSL System 9

Specifically, Hyperion customers will be able to use SQL Server Reporting Services to access Hyperion System 9 BI+ Essbase Analytics, and also will be able to display Microsoft reports in the Hyperion System 9 Workspace environment. In addition, Microsoft customers will be able to access SQL Server Analysis Services data using Hyperion System 9 BI+. Also, Hyperion System 9 will leverage SQL Server Integration Services for data access.

Hyperion is the first BI vendor to embrace Microsoft SQL server to this extent.