I think most users don't know the difference, and an OLED of that size would be expensive. I think they'd rather have a £30 cheaper device than one boasting an OLED screen.
It's probably a given that those Netbooks will run Maemo too.
The indicator that you should be looking at is how many (mid-long term) developers are committed to support that system. read: think they can make money by developing for that system.
Nokia's next focus probably would be the Ovi store