I wouldn't be surprised if they had it listed soon. CD Japan might have gotten the scoop on it first because they're a Japanese company. You might see it listed on Amazon and other retailers soon. I just checked for the Japanese Blow By Blow SACD and found it on Amazon, Deep Discount, Import CDs & Bull Moose so it makes sense that those places would carry the Wired SACD as well.
Apart from CD Japan, there are independent retailers based in the Far East that will stock this (from whom I've bought a few things and always had low postage, reasonably fast shipping and no customs charges) and a couple of them are showing you can pre-order from them already.. but as much as I almost cannot wait to hear this in all its Surround SACD glory, I don't want to tie up £60 right now (or whatever it works out as) in a pre-order for the next 2 months since I could buy about 6-8 nice Quad LPs from my wants list with that money today if I shop around and they would all be of Quad stuff I haven't heard before so it would be half a dozen plus albums of genuinely new surround music.. we all have our own personal take on why we do and don't buy these things either at the time of release or down the line, there you go, tawdry tales of Freddums!