Macles claims Acer will introduce a 10.1" Aspire One netbook in February 2009. Most of the specifications will be the same than the 8.9" model, there will be several SKUs but there will be no Linux model with a HDD. Unfortunately, it seems the 10.1" display won't offer a higher resolution than the 8.9" model:
The Storage Expansion slot has been removed, and a multicard reader put in its place. The functionality of the current Storage Expansion in Linux is entirely software based anyway. No onboard memory. There is only a single DIMM slot now, with a maximum capacity of 2GB. The screen is 10.1" with the same resolution as the current screen. 3G and Bluetooth 2.0+EDR are optional.
The 10.1" Aspire One will ship in white, black and red, and it will have several design changes. The area around the keyboard will have a brushed metal finish, and the seamlessly integrated touchpad will resemble a more traditional touchpad.