Candlelight Records will be reissuing all of Emperor's four genre-defining black-metal classics beginning on October 19 with all sorts of bonus material. Details: http://www.roadrunnerrecords.com/blabbermouth.net/news.aspx?mode=Article&newsitemID=25142
I'm not sure how exciting the extra live footage will be, as I thought they were awfully boring when I saw them on their only US tour. I'll probably be content with my remastered version of "In the Nightside Eclipse" from a few years back and will consider the others if there's a significant difference in sound quality.