First there's the Fortress, this is a heavy duty USB stick like the Corsair Survivor. One of the special features of the Fortress is that it features a small display but I wonder if that component can handle as much abuse as the rest of the shell.
Besides Fortress, OCZ also unveiled Spyder and Diesel. Spyder is a very compact convertible USB drive that comes in sizes of up to 8GB. The Diesel on the other hand is a memory stick with large memory capacities, the product package says 16GB but I don't know if they will have even larger units. The Diesel wasn't designed for top speed, OCZ says this memory stick uses "lower grade" memory to deliver lots of storage capacity at a low price.