http://www.s-f.co.jp/soft/ps2/kikikaikai/
Two early previews from December 2006 showing how great the game looked:
http://www.famitsu.com/game/coming/2006 ... 6,0,0.html
http://www.watch.impress.co.jp/game/doc ... 2/kiki.htm
And now a product page on Amazon and a blog post on Wired reveal that, though Kiki Kaikai 2 is not to be revived, a new game called Kiki Kai World is in the works for PS2 and Wii which will ostensibly be its "spiritual successor" (though in fact it will be basically the same game with a different title). From the Wired post:
The new game will be released in the US on both the PlayStation 2 and Wii. The PS2 version is currently scheduled for a December release, with the Wii version arriving early next year. The game will also be released on both platforms in Japan.
A major point of contention seems to be whether the game will include support for digital controls or not.
Read more about the whole monkey business here:
http://postback.geedorah.com/foros/viewtopic.php?id=275
http://www.gamengai.com/forum/viewtopic.php?t=1488
Meanwhile, the Japanese release dates are still unknown.