I think this is the worst Access version yet.
I spent 20 minutes on it, and couldn't find any and I really mean any new thing except the metro interface.
Even the VBA IDE is still the same (10 years old) no new addin creating ability, no OData, no better SQL server support, no gradient backgrounds for forms,....
NOTHING NEW. I cant believe that it took them two years to produce this.
Only new things are the "Access Apps". The same web databases we had before. They added some new design options, but to use it, you still need to have Office 365 or SharePoint Server. In comparison to their own LightSwitch, it is just a bad copy.
If you don't want to build this "new" and the so called web apps, you don't need 2013.