I just read about this new anime when I was checking a FMA page. The anime is called Samurai 7, based on Akira Kurosawa's classic 50's film "7 Samurai". The anime is being made to commemorate the film's 50th anniversary. I'm downloading the trailer subbed by Anbu-AonE, which will also be fansubbing the series as it's released. You can check it out here: www.samurai-seven.com.
Edit: I just saw the trailer and it looks awesome. If you've seen the film, just picture it with a bunch of cool mechs thrown in. A must see.