It's just all about the new editions lately, hasn't it? Not to say that the games were bad in their older versions, but sometimes you just need to update things. Well, Mantic has started taking pre-orders for Deadzone 2 (Dead Harder). But what sort of things have changed from the original edition? That's just what they're answering in this preview.
Starting out, your forces will be built differently. They are allowing much more freedom in builds. They're also encouraging conversions and kit-bashing. Since many of the new options don't have models (and may not for quite a long time), Mantic is saying go ahead and put together what you can. Along with that, the rules for leaders have been changed to make it so they're a much more defining part of your force. Their abilities and rules will sort of help guide armies to work certain ways, giving you more thematic options.
Next up is that the battle cards are being removed from the game. Instead, you'll get command dice. The decision was based on not wanting to make people always need to buy more cards. Also, a lot of the cards simply countered other cards, which meant much of the time they didn't end up really doing anything. The dice give you more of a way to affect the game.
They're also revamping the league system. At the start of a new campaign, you'll basically build up a really huge strike force, from which you'll use only a portion of it each game. Each model will be considered unique, and will thus have their stats tracked over the course of the league, letting your entire group grow and change as you play through.
As I mentioned, pre-orders are available now for the new edition over in the Mantic webshop.