Seagate's finally unveiled its first 2TB hard drive, the 3.5-inch Constellation ES. The hefty spinner also comes in 500GB and 1TB varieties and runs at 7,200RPM, which should make it a bit faster than Western Digital's behemoth, according to reviews for the latter. It'll be out calendar Q3, which we take to be fancy schmancy business talk for "this Summer." Meanwhile, the 2.5-inch ES-less Constellation line sports 3 Gbps SATA and SAS 2.0 interface. Look for this one in 160GB and 500GB sizes sometime this quarter, with Dell said to be one the first companies to offer the drives. Check out one more out-of-this-world promotional image after the break.