http://www.teamliquid.net/forum/viewmessage.php?topic_id=228212
Q: What are some of the changes made to multiplayer Heart of the Swarm?
A: While we're not quite ready to go into detail about the new multiplayer content in Heart of the Swarm, we can say that this expansion set will include new units and new maps. We'll have more details about multiplayer Heart of the Swarm content at BlizzCon.
Q: Will Heart of the Swarm require ownership of Wings of Liberty?
A: For the regions that have a standard box business model such as North America and Europe, yes, Wings of Liberty will be required in order to play Heart of the Swarm. For other regions that have alternative access models, we’ll provide details at a later date.
Q: How much will Heart of the Swarm cost?
A: We typically don't provide details about pricing until the game is closer to release. We do view Heart of the Swarm as an expansion set, so for the regions that have a standard box business model such as North America and Europe, we will price accordingly. For other regions that have alternative business models, we’ll provide details at a later date.
Und auch sehr interessant:
Q: Are there going to be any improvements to the game graphically or technically?
A: We actually just implemented a new physics engine, which implements ragdoll physics; this should allow us to have ragdoll physics effects. It won't be implemented for large scale battles; however, it could be used to animate single units; for example the last marine dying in a pack could have ragdoll physics applied to it. We're also looking at doing different types of conditions, for example weather conditions, as well as different types of creep.
Es sind also nicht einfach nur n paar neue maps im Editor zusammengebastelt.