Click to enlarge the images. Enjoy!

 Here’s the tentative protoss building tech tree:

(click to enlarge)

 Here’s an schematic of the Terran building tech tree, take a look:

(click to enlarge)

Click to enlarge:

Enjoy!

Here’s a screenshot from a German Magazine (click to enlarge):

It shows some concept art of the Terran Thor, as well as a group of Thors taking out a few Terran buildings. It looks like the Thor will act as a heavy duty mechanized ground assault force, something that they really lacked in the first Starcraft.