The ESRI Map Web Part can be added to, and is fully supported on, Publishing Pages, however, while configuring a list within a Map Web Part that has been added to a Publishing Page, the 'Check for Updates' option does not appear on the Definition tab.
in MapIt version 1.0, this functionality is not available for Map Web Parts that have been added to Publishing Pages.
Microsoft Office SharePoint Server 2007 offers an Office SharePoint Server Publishing feature. With this feature enabled, site collection owners can easily create new Publishing Pages. Changes to Publishing Pages are then managed by SharePoint's publishing infrastructure, which includes check-in/check-out capabilities.