The most notable is that you can now save to HTML as an alternative native format. This means that you can save a document, spreadsheet, or presentation to a web site in a form that displays well in a browser, and later reload it without losing any formatting information, including formatting information you could not display in a web browser. But to developers, the big news is native web storage. Access has changed its data storage. It brought databases from previous versions forward without problems in my testing.
Access is an interesting application.
MOD includes a new run-time version of Access for redistribution. I was happy to hear Outlook was finally getting VBA support, but the level of integration is far short of what I had hoped. Nevertheless, creating Outlook sessions lets you create some useful Office applications. Outlook is usually run all day and makes sense as the driver for a lot of enterprise applications. Events are fired for incoming and outgoing mail, which lets you react automatically to certain types of mail.