The new Fire Emblem is coming out soon (Feb 22), and Nintendo has launched a site to commemorate the series, called Fire Emblem World:
http://www.nintendo.co.jp/fe/
The series history page is cool, but otherwise there's not much there at the moment.
The Akatsuki no Megami (The Goddess of Dawn) page though has screens, character artwork and a video:
http://www.nintendo.co.jp/wii/rfej/index.html