No they are not.
starcraft 2 Wings Of Liberty has already come out, but the other expansions haven't come out, unfortunately...
According to 1UP it is Starcraft 2: Wings of Liberty.
it should be an option.
Yes, Heart of the Swarm is considered an Expansion pack and therefore it requires the base game of Starcraft 2: Wings of Liberty.
The game will be split into three separate products, based around the terran, zerg and protoss campaigns respectively. The first is called StarCraft II: Wings of Liberty, the second will be called StarCraft II: Heart of the Swarm and the third will be called StarCraft II: Legacy of the Void. So if by Starcraft 2 you mean Starcraft 2: Wings of Liberty then yes only terran but there will be three game products for the zerg and protoss campaigns.
It really depends on how well connected to the internet you are. You can always test the download speed of your internet by using the speedtest website.
no it needs at least windows vista
it waas $60 when i got it, but it is probally less now
It would probably be either Call of Duty: Black Ops or Starcraft 2:Wings of Liberty
It is only for Terran, but other campagins will come out later
Yes, but so far, you can only download they Starcraft 2 Beta version.