vaporware

noun

1. (uncountable)An advertised product, often computer software, whose launch has not happened yet and might not ever happen.

   “Our hard-and-fast rule was that if we couldn't see it, it still resided in that special zone called "Vaporware."”

   “Vaporware appeals widely to industrial and consumer buyers.”

   “Some would say that Microsoft engaged in a subtle form of vaporware by preannouncing its product before it was actually ready to be delivered, then, at the last minute, announcing a short delay.”