After reading that article, I did a Google search for a definition of vaporware.  I found the following definition at Merriam-Webster Online:

One entry found for vaporware.
 Main Entry: va·por·ware
Pronunciation: 'vA-p&r-"war, -"wer
Function: noun
Date: 1984
: a new computer-related product that has been widely advertised but is not yet available

I also found similar definitions at:
Marconi
High-Tech Dictionary
hyperdictionary
webopedia