Wi-Fi devices will soon be able to connect in a new way that makes it more simple and convenient than ever to do things like print, share and display. The Wi-Fi Alliance is nearing completion of a new specification to enable Wi-Fi devices to connect to one another without joining a traditional home, office, or hotspot network. The Wi-Fi Alliance expects to begin certification for this new specification in mid-2010, and products which achieve the certification will be designated Wi-Fi CERTIFIED Wi-Fi Direct.
http://www.wi-fi.org/news_articles.php?f=media_news&news_id=909
This is really exciting :)