Okay, so the Horn Book has a Guide to Children’s lit which they publish every year, and its online version is available through the MRC library. Go here, and then choose the “ProQuest Education Journals” database, which will search a bunch of stuff, including the Guide. Cool, right?
If you are looking for good quality children’s lit, this page links to a number of different awards sites.
For those of you specifically looking for feminist works, or stuff that addresses gender issues, this page has a number of bibliographies – it has a particularly strong fairy tale section. The Amelia Bloomer Project presents recommended reading lists for a variety of categories of children and young adults – this is a good one for finding recently published books.
New Moon is a feminist magazine for girls; they don’t seem to have book reviews on their site, but their resources page might be helpful.