ZDWars 3.1 is going to do some neat things. Nothing earth shaking. There won't be a version on par with 2.9 in a long while, but 3.1 is a step towards perfecting 2.9, so that's cool. Anyway, some of the highlights:
-All Hero and Elite (cost more than a Hell Knight) units will have a health bar floating over their heads for all to see.
-All summoners will now not be switched to when unlocked, and non-basic units will not auto-fire if the button is held. Tap to spam these guys. This protects against accidentally spawning two barons of hell or what not.
-Doom's middle tech tree branch will take less units to progress through.
-Swamp Stalkers are getting a combat buff.
-Order Turrets are getting nerfed, and will no longer be able to hit ghosts.
-Flem spores should finally work correctly.
-Virus turrets getting nerfed, spreadshot turrets getting buffed.
There are also other things that have only been revealed in the IRC channel, because those people are SPECIAL.