This is a classic Flash game that would make a sweet little port to an iApp and work great with the touchscreen interface: www.gamedesign.jp/flash/dice/dice.html
It would be cool to see Dice Wars! Although in the mean time, Strategery is very similar... It's still on my phone and gets played a lot more than some flashy titles
I'm just going to second what romulus said. I've been a huge fan of Dice Wars for years and Strategery really is basically the same game with some extra customization options. Highly recommended. I see no urgent need for an "official" Dice Wars game.
It's Here! You're in luck. Check out KDice Trainer. New to the App Store. It's a great little port of Dice Wars. Looks just like the original. $3.99. Grab it TODAY!
Right now KDice Trainer is on sale for 99 cents, which should make it even more appealing if you need a Dice Wars fix. I'll probably try it out myself when I get the chance. Of course, I will add my +1 to Strategery as well. The game is polish, has some cool options, and doesn't take long per individual game.
There's also MicroFight which just came out today-- http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=312700158&mt=8
I ran across that earlier today and am seriously considering picking it up, just because I like the whole alien thing. Of course, KDice Trainer looks pretty cool too.