It is mostly done (at least in this case, probably most cases) because it doesn't actually work and they aren't finished yet.
I think it is in good faith - they aren't intending to lie or deceive, but it's show and tell time and the product isn't ready. I still think it goes against the spirit of a tech demo and is pretty dishonest. Intel have very aggressive schedules lately, so this isn't surprising.
That is also why they knowingly ship broken chips lately:
Yup. The whole industry runs something like two years ahead of current capabilities- that is to say, you start designing a product two years before it can be made- and the instant it actually works & has been tested, it is time to ship.
I think it is in good faith - they aren't intending to lie or deceive, but it's show and tell time and the product isn't ready. I still think it goes against the spirit of a tech demo and is pretty dishonest. Intel have very aggressive schedules lately, so this isn't surprising.
That is also why they knowingly ship broken chips lately:
http://www.techpowerup.com/156625/Intel-Core-i7-3960X-and-i7...