> is the OS upgradeable and how?

It runs Linux in the same way as the car player (double boot from flash and so forth). The kernel could be patched in just the same way.

> is it hackable or are you having to be a bit more tight lipped with the code?

I'm not sure what you mean by hackable. You can get a Linux console right up on the screen with a USB keyboard. The database, software and so forth will look quite familiar to someone who has experience with the car player.

> are the hard disks upgradeable?

There won't be an official upgrade path as far as I know. Unofficially, the product ships with a CD which will build a new disk.

> What are the other I/Os?

2 x USB Master (1 on the front, 1 at the back)
1 x USB Slave
Analogue out on RCA's
Digital out on TOS Link
Home PNA
Telephone
Consumer IR (for supplied remote control)

The USB provides for USB-Ethernet, keyboard and joy pad (you can play SDL games).

> Will it have Prolux Visuals?!!!

Yes!

Rob