SSAS2005 and Office 2007 - no OWC, what to do

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I understood that Office 2007 will not have OWC. Currently we have
application that heavily uses OWC to access SQL Server Analysis Services
2000 and now migrating it to access SQL SErver Analysis Services 2005.
Without OWC in Office 2007 what is the best way to migrate our application?
As I understood Office 2007 will have "Excel Services" that will work
through Sharepoint services. So is this almost the same as OWC? Does it have
interactivity?

Thanks