Eventually, Asus could not keep hiking the price of Eee up like gasoline. This will effect Eee 900 series on both Linux and Windows XP model. Though Intel Atom version will not included. I guess it's due to shortage supply as well. By the way, in practice, it doesn't seem that Atom performs much better than Celeron, so I don't think it will be an issue.
For the time being, Asus Eee PC 900 8.9" 16GB, 20GB SSD 1GB RAM Linux will cost you around $400 and $450 (after $100 mail-in rebate for some stores) respectively while Windows XP version will be $50 extra. Oddly, there is no price cut on Eee 700 series which means Eee 701 4GB is about $399 and 702 model (8 GB) is still $499. It seems like no one would buy 700 model intentionally =) By the way, I still expect to see either another $100 off for 700 models or fading out of this series pretty soon. If you are interesting in the King of Netbook, this is such a nice time to grab one. Every popular online stores I know have this in stock.
Nonetheless, $100 off of Eee 900 is yet to tell if Asus will be able to retain the crown since $399 with 8.9" Intel Celeron is almost the worst spec on paper. There are many arch rivals like Dell E, Acer Aspire One, and MSI Wind with this price tag and better spec. We will see how Asus is going to do with this.
Note: I just have a chance to see HP 2133 Mini-Note physically; it is such a toy!! I can believe that its keyboard looks really cheap--a lot cheaper than Eee PC, I must say.