CMIS is a specification that Microsoft developed in along with IBM, EMC, Alfresco, OpenText, SAP and Oracle to enable greater interoperability between content management repositories and to enable a whole new range of Composite Content Applications that can be build agnostic of the underlying repository.
CMIS specification, forming a Technical Committee at OASIS to deliver that specification as a truly open standard, and having four "plug-fest" events where we've tested actual (prototype) implementations of the spec together to make sure it would work in the real-world – I'm thrilled to announce that on October 23, 2009 Version 1.0 of the CMIS specification entered OASIS' public review process.http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=cmis
The CMIS specification defines a standard "domain model" for an ECM system - a set of core concepts that all modern ECM systems have, like Object Types (which in SharePoint we call "Content Types"), properties, folders, documents, versions, and relationships - and the set of operations that can be performed on those concepts, like navigating through a folder hierarchy, updating a document, etc.
Public voting on the CMIS specification ends on April 30th and we expect that the specification will be ratified as a standard shortly afterwards. We are excited that our work on the specification alongside the other leading ECM vendors is coming to fruition and are looking forward to providing support for the standard in SharePoint 2010.
Senior Product Manager, Microsoft Corporation