Uhm...it says nothing about $100 estimate.
We are assuming it has the mandatory HD DVD requirements of persistent storage, network interface and HDi support but other then that, we have nothing. Hopefully when more details emerge, they will include a price of around $100 and a launch date that is sooner then later.
The $100 figure is just a hope the author has...
EDIT: I just realized that that is the article from March that was discussed to death here. D'oh! Don't mind me...it's been a long week.