ASUS released the Eee 1000 PC on June 3, 2008, with a 10 inch screen, 1.6 GHz Intel Atom CPU, Linux, 2GB RAM and 40GB disk (also Windows XP model available). for about US$625. The unit is much larger than previous Eee PCs (about A4 size).
There is criticism of this unit for its size and speculation that the Eee 900 Series with its 8.9 inch screen will be dropped in favor of a Eee 1000 fitted with a smaller screen. But being about A4 size, I think the Eee 1000 will be the idea size for many applications, having a keyboard big enough to type on, but in a case small enough to fit in a bag with paperwork.
If used for business or study, a PC only has to be small enough to fit in the bag with your paperwork. Making the PC smaller than this provides little advantage (unless you want to carry it in a handbag, when the B5 siz Eees become useful).
One disappointment is that the unit will not be diskless.