This design actually continued for quite a while. The last model came out around 2010: https://en.wikipedia.org/wiki/Sony_Vaio_P_series

Unfortunately, it's saddled with probably the worst series of atom intel made, the original Z(with the awful powerVR gpu).

They still go for quite a bit on ebay, because people love the 1600x768 form factor. I had one for a while, but ended up selling it because i couldn't get over how bad the performance was(720p youtube was a no go, for example). The GPD is sort of a replacement in spirit, but i liked that form factor a lot.