Microsoft made several changes to VBA in Office 2010, all of them targeted at the one major change in the Office 2010 architecture, i.e., the availability of 64-bit Office applications. This note summarizes how the changes affect developers. I imagine there is a comprehensive list somewhere in the microsoft.com universe but I could not find it.
Microsoft upped the version number of VBA to version 7. While most version changes introduce several new features and capabilities, that is not the case here. The only enhancement is support for 64-bit Office systems.
For a version in a page by itself (i.e., not in a scrollable iframe as below) visit http://www.tushar-mehta.com/publish_train/xl_vba_cases/1016 Office 2010 VBA.shtml