First volume is February 22nd apparently. Then volume 2 will hit sometime in Arpil, with the final in June of 2005.
That's a little longer between each volume than the UK issues, but if you want the R1 DVDs because they're often cheaper - go for it. The UK volumes are £11.99 which is cheaper than usual DVD prices.
These American discs come courtesy of Adness / Ventura. Spotted over at asiandvdguide.com.