In games where magic also exists, technology tends to be evil. I can't think of an example of a technologically advance people being good while the primitive people were evil, but there are lots of cases the other way around.
You got me there. The only example I can think of off the top of my head is Metroid Prime: Corruption where, on the planet Bryyo, a conflict arose between a progressive pro-technology faction and a traditionalist pro-magic faction. The pro-magic faction eventually won, ultimately leading to the death of their advanced civilization and the regression of their species to primitive savages.
But other than that one, I can't think of any either.
But consider this... White=Good/Black=Evil and Magic=Good/Technology=Evil are such common and obvious visual shorthands that they could be considered tiresome clichés. Since Dragon Commander was touted as something of an ambitious project, one would think that ambition would show even in these early visual designs and Larian would not take the easy way out. Therefore, concluding on that single image alone that the White Dragon is the Good One and the Black Dragon is the Evil One, like Demonic did, would be... premature.
(Although in all seriousness, yeah, the White Dragon probably will turn out to be the Good One and the Black Dragon probably will turn out to be the Evil One, but until we get some actual confirmation, I'm gonna resist such easy snap judgements.)
Awesome 
