Here’s some sources I often use to get information:
Comics A.M. – A resource pool of comics-related news and information neatly packaged for easy reading.
Anime News Network -A plethora of anime & manga-related news, columns and a vast encyclopedia on the industry.
Publisher’s Weekly– International book and book-selling news, reviews and bestsellers.
About.com: Manga -Manga-related news, reviews and Deb Aoki’s blog.
Comic Book Movie -News and updates on the comic book movies in all stages of production mostly maintained by fans.
GeekTyrant -A blog about movies, movies and movie-related news.
News straight from the source:
Tokyopop -While they don’t have a formal news page, check out the newsfeed on the right side of the page.