Desktop drives are pushing the capacity envelope further, with Seagate's announcement today of a truly massive drive. Seagate announced a new Barracuda 7200.11 drive that boasts 1.5 terabytes of space, making it the largest desktop drive available (though not for long). It'll have options for both 16MB and 32MB of cache. Aside from having a massive amount of space, there's not a whole lot new with the drive - it supports the standard functions in the Barracuda series such as perpendicular recording.
Seagate also announced a new unit in their Momentus line, which is Seagate's current generation of 2.5" drives. In both 5400RPM and 7200RPM flavors, Seagate has made a 500GB laptop drive available with 16MB of cache. Exact prices aren't mentioned but both drives will start shipping sometime next month.