Good News for anyone working with BSM and thanks to Patrick Husting for the heads-up on this.

As we get closer to releasing Microsoft Office SharePoint Server
(MOSS) 2007, the field has asked the Business Scorecard Manager (BSM) 2005 team if Microsoft Office SharePoint Server 2007 will be a supported
platform for BSM 2005.    "The answer is YES!"

The BSM 2005 team will provide a BSM 2005 Service Pack 1 release
approximately ten weeks after MOSS 2007 is publicly available.
The Service Pack will include a roll-up of released Quick Fix Engineering
(QFE) updates and a number of fixes that are specific to MOSS 2007
integration. To acquire BSM 2005 Service Pack 1 customers will require a
BSM 2005 license.

It is not necessary for current BSM 2005 customers running on Microsoft
Office SharePoint Server 2003 to apply Service Pack 1.  Service Pack 1 is
required only when customer deploy BSM 2005 on MOSS 2007.  It will be
released through the Microsoft Developer Network (MSDN).