New StarCraft II Gameplay Video reveals New Zerg Unit?

From GC 2008, a new gameplay video has emerged which reveals, and confirms, some interesting details. Be sure to lookout for the following:

• Improved harvester pathing
• New Zerg Unit? (see screen shot)
• Interactive/Destroyable Doodads (zealots take out boulders)

You can watch the full gameplay video below:

Update: I have received some emails from our growing base of readers offering that it may be the Zerg Queen. While I cannot confirm this, as it not posted on the official Zerg section of the StarCraft 2 website, maybe someone could post some references to confirm these reports.

Update 2: Yes, this is indeed a Zerg Queen! Thanks to all who helped put this to rest, and we appologize for the alarm.