Just ran across this on File 770's blog. A majority of both the Novella and Novelette nominees are available on the internet... showing once again how much publishing is changing. Here are the Novellas, and as well Here are the Novelettes. Apparently the Chicon 7 team are working on coming up with the voter packet, but this lets you get in and start your reading early.
free
For Your Consideration: The 2012 Hugo Short Story Nominees
As you may know, it's become custom recently for the folks who have memberships (attending or not) to the upcoming Worldcon to get free copies of most of the nominees, so that they can all be checked out before it's time for voting. Even better this year, however, is that all five of the nominees for the Short Story Hugo are already free on the web, so why not have a look and enjoy?
“The Cartographer Wasps and the Anarchist Bees” by E. Lily Yu (Clarkesworld April 2011)