When you first boot up the Access 15 Public Preview, you will be greeted with the option to create a blank web database, a blank desktop database or select one of the Desktop or Web templates that are available. It is interesting to note that databases now seem to be either Desktop or Web applications. I was not able to get any of the web templates or even a blank web database to load. It appears that you have to be connected to a hosting service or something to get this to work at all.
I was able to load up a Desktop template and while Access 2013 does feature a spiffy new Metro interface, the standard desktop features that everyone has come to expect in Access seem to all be intact.
The ribbon in this new version of Access 2013 is laid out nearly identical to Access 2010. Everything seems to be located in an easy to get to place and any users of Access 2010 should feel pretty at home even with the new Metro styled interface.
Which brings up the questions: will accesshosting be upgrading to Sharepoint 2013 so that new Access 2013 web sites can be hosted? If so, what will this mean for existing 2010 sites? And further, what about the reporting services that accesshosting has but Office 365 does not?
We are developing our own Access 2013 SharePoint offering. It is way too early to get into the exact feature sets of our offering compared to what Office 365 will offer. None of these products have been released yet.