I don't read or understand Japanese, so let me quote you his comments:
This new search engine beta actually will work with a lot of English keyword searches in addition to the Japanese. Enter a keyword and give it a try.
The tabs at the top offer a number of ways to break down the SERPs. The default is to show all of the different categories together on one page "zenbu". Then we have web, Q&A, images, movies, news, maps, shopping, and sponsors.
I've run through several searches, and it looks like a useful way to break down the SERPs. Could this be part of the MS Kumo beta?
Common to Asian based search engines, the interface is very graphical. I decided to try searching for the word privacy in Japanese and I took a screen capture of the very interesting search results layout. You can see a screen capture of it at my Flickr account.
This is clearly powered by Live Search, but the big question is, might this be a preview of Kumo in Japan? I doubt it is what we would see in the US when Kumo launches.
Forum discussion at WebmasterWorld.