We've now found a preorder listing for both this and an Optimus Prime Head sculpt USB Hub as well on BBTS.com.

Product description is as follows:
This 9” tall USB hub in the form of Optimus Prime's head, includes the phrases: “Autobots, transform and roll out!”, “This is Optimus Prime – do you read me?” and “It’s time to stomp some Decepticons!” When connecting hardware or memory sticks to the hub the sound and lights (in the eyes) are activated. An on/off switch included so the sound doesn't have to go off. Controls 4 devices, no mains plug/power cord is required.
Retail price listed for this preorder is set at $34.99 USD.
You can view the preorder for both the Allspark Cube and Optimus Prime Head USB Hubs here.