Phantasy Star Zero is the next portable outing for phantasy star but it will have one thing over the recent PSP phantasy star: Online Servers! It will also be a bit less futuristic than the games before(although you can be a robot) and you will use metal swords instead of beam swords. This will be the DS's first MMORPG and it looks pretty damn sweet! Here is a video:
http://www.dsfanboy.com/2008/10/01/jaws-drop-at-first-phantasy-star-zero-trailer/ Screenshots(although it looks better in motion):
You can chat like in picto chat.
There will be 3 buttons assigned for certain actions, mainly attacks.

Here's hoping it will come state side!