Starcraft 2: Heart of the Swarm release date was announced today; March 12, 2013.
What's with SC2:HotS? If you order the CE version, you get the Baneling pet!! :D But that's not all, according to Warcrafpet's Twitter, if you pre-order the Digital Deluxe version NOW, you'll receive the companion instantly! As in... today. XD
I just ordered mine, and once the WoW servers come back up, we'll see if this is true or not. If so, I can't wait to start leveling the Baneling!
The Digital Deluxe CE costs $59.99, while the physical box CE copy will likely cost a bit more ($90ish..?) but I haven't read any announcements that pre-orders for the physical version are available yet.
I'm very excited and pleased with Blizzards new approach to CE versions of their games. It's a little less pricey, yet still comes with the bells and whistles that I personally want. The art books, making of DVDs, etc. are really interesting, but those are things that I browse through maybe once and then store away safe and sound. So it makes much more sense for me to purchase a digital version.
Anyway, to order the SC2:HotS Digital Deluxe, go into your Battle.net account management and if you already have SC2 linked to your account, you should see a green arrow (upgrade) indicator on your SC2 game listing. Click that and it will take you to the SC2 page. The purple box in the lower right hand corner will have both normal digital upgrade as well as Digital Deluxe available.