The updated version of Word 2013 in the Office 2013 Consumer Preview doesn't have many major changes to the interface, but there are some welcome tweaks. One of the more useful is the ability to easily add rows and columns to tables.
In Word 2010, you have to right click on the table or select options from the Layout tab on the ribbon. In Word 2013, you can hover near the edge of a row or column and a plus sign appears. Click it and a new row or column is inserted. Very handy.
[via Word Blog]