Windows XP Tablet PC Edition
In February 2003 Microsoft officially released Windows XP Tablet PC Edition, which was only available to OEMs, and manufacturers including HP, Toshiba, ViewSonic and Xplore responded with machines that featured the new OS. At the unveiling of the OS in November 2002, Bill Gates held a Tablet PC on which he had written "Tablet PC is Super Cool!" The 2005 version of the OS was released in August 2004. Mainstream support for both editions ended in April 2009. Tablet PC functionality was built into the core OS starting with Vista.