Vapourware

In a sentence

Critics called the project vapourware because years of promotion had produced no working product.

• Critics called the project vapourware because years of promotion had produced no working product.
• A polished roadmap is not enough to prove that a token platform is more than vapourware.
• The team released a public test version to counter claims that its software was vapourware.
• Investors grew concerned that the promised hardware wallet might be vapourware.
• Repeated delays and missing code reinforced the perception of vapourware.