The Kindle Touch, a now discontinued, Kindle has a major software upgrade today. The Touch now has an entirely new menu and interface to make it almost exactly like the Kindle Paperwhite. The new Kindle Touch Software upgrades the firmware to 5.3.2.1.
Whispersync for Voice (ability to sync in between Audible.com Audiobooks and Kindle books) is now working on the Touch. I believe from reading the documentation that unlike the Paperwhite you can both listen to the audiobook and read the kindle book on the Touch directly. The Paperwhite does not have speakers or headphone jack so this is one area where you might be better off with the older Touch than the newer Paperwhite.