It has been speculated that the ports are all on the left because this would make a dock realistic again...and some have speculated about that Apple patent w/ the laptop being inserted into a monitor/iMac looking contraption. I believe the latter is why the OD has moved to the right. Even if Apple doesn't release this technology Tuesday it leaves open the possibility that they could down the road. Think about it, if the OD is out front you couldn't insert or eject a disc w/o removing the laptop from inside the monitor. With the notebook inserted the OD functions just like the iMac's drive.