I've been catching up with the last few months' announcements of awards for children's books, and added some to the page "2011 Best Children's Books: A List of Lists and Awards." (The honored books were first published in 2011.)
Minnesota Book Awards. These honor mostly titles for adults, but do feature one category for kids' books.
Scottish Children's Book Trust Awards: Shortlist
Updated to add: Posted today, the Horn Book's "Mind the Gap Awards," for books that should have gotten more honors. Plus, the Amelia Elizabeth Walden Award finalists were announced by the Assembly on Literature for Adolescents (ALAN) of the National Council of Teachers of English (NCTE).
Lots of good reading ahead!