Resolution Supports

Galciv is setup to support widescreen monitors like you find on some laptops... I see no reason, if you configure the graphics options the right way, that Galciv wouldn't work over dual monitors. Although everything is always a little hinky in a beta. To make it work you may have to run it in a windowed mode of some sort, as I don't know how dual monitors work. When a program runs 'fullscreen' that's fullscreen on ONE monitor - so to get the spread you desire you may have to run windowed and let the operating system spread the game over the two monitors. Internally though, Galciv should in theory support any resolution above 1024x768 that you desire.

Can anyone confirm that they have gotten a dual-monitor setup configured to work for the game or if they know any info about if it will be incorporated into the final release?

It is unlikely that dual monitors (or more would work) on a standard system since GalCiv2 is a DirectX game. The only way I can see GalCiv2 working on dual monitors is if you had special graphics drivers to "fool" DirectX in displaying across both adapters or using both RAMDAC's. The game itself would support wide screen, however, it's based on DirectX to figure out how to control both displays.