Use the adjective revised to describe something that's been updated or improved, such as a revised draft of your paper that includes corrections and new sentences that help explain your ideas.
The word revised comes from the Latin word revisere, which means "look at again, or visit again." When you revise something, this is exactly what happens. A revised opinion has been thought over and changed, and a revised edition of a newspaper or online news story has been edited, its inaccuracies fixed, and re-published. Revised usually implies that something has been improved or modernized as well.