It seems that Blizzard has confirmed that StarCraft II will also be getting a Collector's Edition, just like almost every other big game release in the past couple of years. Well, kind of confirmed, anyway.
The "confirmation" comes from Blizzard community manager Karune who posted on the Battle.net forums asking for questions aimed specifically at the StarCraft II devs - everyone from production, art, and design to programming and QA - about their experience in developing the game.
The chosen questions will be included in a special video interview with the devs. While Q&A posts like this are commonplace, Karune did ask people to avoid questions that focus specifically on gameplay and "other questions better suited for [the] traditional Q&A batches". It definitely seems more like a behind-the-scenes DVD bonus than anything else.