A public beta version of Windows 10 branded as “Windows Technical Preview” was released on October 1, 2014; the technical preview builds are aimed towards enthusiasts and enterprise users. Testers who opt into the “Windows Insider” program receive occasional automatic updates to the Windows Technical Preview, allowing Microsoft to collect feedback on changes throughout development of Windows 10. In previous Windows beta programs, public preview builds were released less frequently.[43][44][45][13][15]