Are you a fan of Erin Hunters Warrior series? Catch all of the latest information about the clans at the author's website:
After a really cool introduction to the site, you can explore information about the books, meet the author, and play some games. You can even sign up for an e-newsletter that will give you advance notice when new additions to the various series become available. I found out from reading a newsletter that there will be a new series called Omen of the Stars. The cats will be introduced to a new foe: beavers! The first installment, The Fourth Apprentice, will be available next November. It's on my list to order!