I recently picked this up when I went to the London MCM expo 2011 in May, eager to see how it continued the story from the end of the TV series.
I am very happy to say that it is Brilliant! It continues the story, with many twists, and new plot points. The English Cast remains the same, and the writing is just as brilliant as ever.
What's better, the film contains a second disk that re-caps the entire TV series as one film. (Unfortunately, it is in Japanese only, with subtitles, as far as I can see, but it does a fantastic job of reminding you of the first part of the story in just slightly less than two hours.)
All together, I highly recommend this first film. Anyone who enjoyed the TV series will love this next addition to the story.
Watch out for the Second film, Paradise Lost, which I think is out on November the 1st this year!