A good way to think of the iPhone X is as a sort of technology preview. (theverge.com)
Microsoft unveiled it at a developers» conference in October and was expected to begin offering limited private technology previews before the end of 2008 before a beta release sometime in 2009. (inc.com)
Future Vauxhall design and technology previewed via the Opel Monza concept car at the 2013 Frankfurt motor show (evo.co.uk)