All of this has happened before and all of this will happen again.
This reminds me of my Psion Series 5 MX. I've been wondering ever since the 'netbook' revolution started when we would see a Series 5 type device. again. I've also been lamenting the fact that Psion don't do such PDA's anymore, because surely they would be making amazing netbook products in they were in that business now.
If you accept that colour screens, t'internet and wifi were not realistic options in the 80's the Series 5 still reads, on paper at least, with a good list of features.
Lets see; Instant on operation (no waiting for the OS to boot just *boom* and you're good to go), touch screen, backlit screen of course, replaceable battery and integrated backup battery, full qwerty keyboard that slides out reducing the footprint, true on-screen controls, built in native agenda, full office suite, expansion slot, RS232 port, infra-red, built in speaker and microphone, with hardware buttons for voice note recording and playback, OPL programming, comms for internet access via mobile phone.
Imagine that updated. So colour backlit touch screen, usb instead of RS232, bluetooth instead of IR, webcam as well as the mic and speaker, li-ion battery, SD card slot instead of CF, update the EPOC OS to include native versions Firefox, Skype, OOffice, Google Maps app and enable all to save to WebDAV storage via WiFi or built in intelligent switching 3G and it would be perfect for what these netbooks are supposed to be. Namely on the go access and cloud storage, not trying to replace your laptop.
I'd buy it. The only issue is how much these 'true' netbook's converge in iPhone territory. It reminds me that there were a huge number of third party applications available for Psion's devices at the time as well. Apple app store anyone? They all used to come on CF cards or could be installed via the PC sync cable. It's all circles and cycles in time, I'm telling ya.
Psion come back!