10. A computer storage device having computer executable instructions for providing notifications to collaborators of a document, the instructions comprising: accessing a document editor program that includes collaborative authoring functionality for collaboration and communication on the document and an integrated collaborative user interface that is used to display information relating to the collaboration; displaying collaborative user interface elements within the integrated collaborative user interface, wherein displaying the collaborative user interface comprises displaying a ribbon menu pane, a document editing pane and a document assembly pane, wherein displaying the ribbon menu pane comprises displaying a document elements ribbon including a publish element, a view details element and section elements including a view details element while in collaborative mode and hiding the collaborative user interface elements when not in collaborative mode; wherein displaying the document assembly pane further comprises displaying, within the document assembly pane, a document detail pane, a section detail pane, and an expanded section detail pane, wherein displaying the document detail pane comprises displaying document details metadata associated with collaboratively authoring the document, and wherein displaying the section details pane comprising displaying section details metadata associated with an author assigned to at least one section of the document; associating other collaborators to participate in reviewing the document, wherein at least a portion of the other collaborators are associated with a same section of the document; receiving updates to the document as a result of input made by at least two of the collaborators; updating the integrated collaborative user interface in response to the updates; determining one or more collaborators to receive a notification of at least one of the updates; sending a notification of at least one of the updates to the document to the determined collaborators; and refreshing the document to reflect the updates.
10. A computer storage device having computer executable instructions for providing notifications to collaborators of a document, the instructions comprising: accessing a document editor program that includes collaborative authoring functionality for collaboration and communication on the document and an integrated collaborative user interface that is used to display information relating to the collaboration; displaying collaborative user interface elements within the integrated collaborative user interface, wherein displaying the collaborative user interface comprises displaying a ribbon menu pane, a document editing pane and a document assembly pane, wherein displaying the ribbon menu pane comprises displaying a document elements ribbon including a publish element, a view details element and section elements including a view details element while in collaborative mode and hiding the collaborative user interface elements when not in collaborative mode; wherein displaying the document assembly pane further comprises displaying, within the document assembly pane, a document detail pane, a section detail pane, and an expanded section detail pane, wherein displaying the document detail pane comprises displaying document details metadata associated with collaboratively authoring the document, and wherein displaying the section details pane comprising displaying section details metadata associated with an author assigned to at least one section of the document; associating other collaborators to participate in reviewing the document, wherein at least a portion of the other collaborators are associated with a same section of the document; receiving updates to the document as a result of input made by at least two of the collaborators; updating the integrated collaborative user interface in response to the updates; determining one or more collaborators to receive a notification of at least one of the updates; sending a notification of at least one of the updates to the document to the determined collaborators; and refreshing the document to reflect the updates. 16. The computer storage device of claim 10 , wherein determining the one or more collaborators to receive at least one of the notifications comprises determining when a section is updated that is assigned to the collaborator.