Toshiba released an update to the T series, strictly in Japan at the moment. The Gigabeat T802 is simply an 8GB version of the T401. This is slightly different than the T400 we have here in the US in that the T401 has 802.11. There is a method to their naming madness. In related news they have also released a memory update to the U Series with a 4GB version.
The T400 is a fantastic player with great sound quality and really clean and straightforward interface, but only being a 4GB player, you will suffer from memory envy. Yeah, wi-fi might be a nice addition, but I think it might be a little more important to get some higher capacity Gigabeat T’s. I would kill for a 32GB Gigabeat T3200.