Maybe there's nothing new for BattleLore (and there probably won't be again in my opinion), but Hasbro is re-releasing Richard Borg's Battle Cry. If you're not familiar with this title, Batle Cry is an American Civil War battle game in the command and colors system, very similar to BattleLore (just without the medieval and fantasy theme). The re-release is being called the Battle Cry 150th Anniversery of the Civil War edition. Looking at the game and reviews of it, the game looks awesome. It includes a mapboard and cards and terrain tiles very similar to BattleLore, and tons of miniatures to represent the Union and Confederate forces. Also, the game comes with a whopping 30 scenarios, covering a huge range of major Civil War battles, from the beginning of the war to the end. Looks very cool to me, and from what I've read, Hasbro is planning to release expansions to this game if sales are good. If you're looking for a game similar to BattleLore, and one that is actively being supported, this might be the answer. Here's a link to the game on boardgame geek:
http://www.boardgamegeek.com/boardgame/88827/battle-cry-150th-civil-war-anniversary-edition