Updated with full pricing/sizes after the cut
This new drive can hold a 3.5-inch drive bay and is capable of handling up to 250MB/s read and 200MB/s write speeds. All of this on a SATA II interface, no less. Other specs include a JMicron controller that drives the RAID 0.
You can expect to pay a whopping $2,500 when the 1TB OCZ Colossus SSD is released by the middle of the month. However, a 512GB version is expected sometime in the near future for those on a tighter budget.
Update: OCZ have confirmed that there will be four models in total, the Colossus 120 (128GB, 250 (256GB), 500 (512GB) and 1TB (1024GB) priced at $300, $650, $1,200 and $2,200 respectively. They'll be available to buy in less than a month.