I just received an email from Nick Okrent, the U.S. History Librarian at the University library.
He has added a new feature to the library guide which is very cool. It contains filtering by newspaper ethnicity type and state, as well as a timeline and list features. A map is also available that is clickable. Here is a screenshot
If you are interested in new tools to aid you in your newspaper research for ancestor articles, I highly encourage you to take a look at the new UPenn features:
Historical Newspapers Online, USA
Take a look!