Kalbelgarion writes, "According to a high-end field Xbox Microsoft rep at TeamXBOX, the latest word from Microsoft is:
Xbox Accessory: Text Input Device
Text input device for Phantasy Star Online.
Overview (TID1)
  1. Text Input Device 1 is only an adapter that allows the user to plug in a USB keyboard into your Xbox controller.
  2. This ONLY works for PSO; not in the dashboard and not with any other games.
  3. Will only be available for purchase online.
  4. The current methodology for distributing the product is through www.xbox.com only (The user will get there through a flyer enclosed in the PSO packaging, fill out form ONLINE and receive the unit through the mail/NO OTHER WAY)
  5. The unit is FREE, except S&H of $6.95
  6. This adapter will be available on-line only on 3/25, launch date of PSO.
  7. Our on-line version of PSO SUPPORTS VOICE/research shows players in Japan LOVE voice communication in this game; it goes without saying that our North American IB already loves voice...
(there's a pic - silver with a blue plug that goes into the controller where the memory card goes... I can't see the side where the keyboard plugs in, and it looks like this TID1 might block the second hole for the memory card... not a biggie, but wanted to make that observation-SG2K)"

Please note that we are not verifying this information to be true. As of now, this is just what a rep said on another board. We tried contacting other XBox reps and they had no information on the device. This is not to say that this news is not true but we just can't verify it as of now.
Also, here is the Web Money package picture for PSO PC.