Sorry, I have no clue about this either but I couldn't help but join the conversation seeing as I'm a Warrior cat lover. Personally, I'd love to have a movie, BUT (always a "but") I hope they do well on the graphics. The Redwall movie was a total disaster in my opinion. Oh, not to mention I hope they get good voices (I thought most of the voices for the Redwall movie stunk too).
Oh, by the way, I don't like Ashfur either. I might have before, but he should really let Squirrelflight make her own choice. Not to mention I am absolutely sure he is the traitor within the clan that Hawkfrost mentioned when he was dying.
P.S. I think either one or all of the three is/are Leafpool and Crowfeather's kits. In Sunset, "...even slender Leafpool had become quite plump." And online I read this "After Sunset: We Need To Talk" which was when Leafpool acted like there was something really important she wanted to tell Crowfeather but didn't when she found out he chose Nightcloud as his mate and they had Breezekit. My bet is that she had kits or something. I say "had" because it had to be before Crowfeather and Nightcloud got together.