The shop Selexyz (big Dutch bookstore) says the SW "will become available late 2008" (original dutch text: "De modellen 1000 en 1000SW komen later 2008 beschikbaar").
This message has been there for quite a while, but because there's been no official iRex statement, it's to be considered outdated and untrustworthy.
The 9" and up have been nothing but disappointments, except iRex's DR. Wireless & touchscreen 9.7"s and an actual A4 are up for spring '09. But, again, there has been a lot of vapourware before, so don't get excited. Pessimism is justified.