http://www.amazon.com/gp/help/custom...deId=201064850
Search terms highlighted in search results
When you search for a word or phrase within a book, the search terms will appear highlighted within the search results. When you tap a result to go to that location in the book, the search terms will appear highlighted on the page.
Select other dictionaries when looking up a word
When you look up a word in the dictionary, you can choose to look up the word in other dictionaries on your device from within the dictionary definition window.
View other definitions of a word
When you look up a word that has multiple meanings for the same spelling (homonym), you can navigate through each of the available definitions from within the dictionary definition window.
Seems no skim feature yet, as promissed to the All-New Paperwhite.