Nothing

Even Kate has said it on her blog, there is nothing new in the Warrior Cats world. Except for the production of the fifth WC arc, the release of the final book in Omen of the Stars, and a new super edition this summer, nothing new has been created. No new manga, no confirmed 2013 super edition.

But I bet that's not what you wanted to hear. I was hoping to stumble upon some cool new spoiler, but instead, I'll dedicate this post to theories on The Last Hope's book summary:

"The end of the stars draws near. Three must become four to battle the darkness that lasts forever. . . .

After countless moons of treachery, Tigerstar's Dark Forest apprentices are ready to lay siege upon the warrior Clans. As Jayfeather, Dovewing, and Lionblaze prepare to lead their Clanmates into battle, they await the arrival of the mysterious fourth warrior who is prophesied to help lead the Clans to glory.

The darkest hour the Clans have ever faced has dawned. Hopes will be shattered and heroes will rise as the warriors fight for their very survival."-amazon.com

• Guesses as to who the 4th in the prophecy is: Leafpool, Cinderheart, Ivypool (It is believed to be confirmed that Hollyleaf will not be in any more prophecies)
• It is said the 4th cat will "help lead the Clans to glory" does that mean he/she will be the most important in the prophecy?
• Guesses as to who kills Firestar: Tigerstar, Hawkfrost, Mapleshade, or natural phenomenon (which would be horrible, he should die in battle!)

More coming soon!