Microsoft confirmed today that the next version of its operating system, Windows 7, will launch October 22. Rumors swirling since April hinted at an October release date, as opposed to the original release plan of January 2010, but nothing had been confirmed by the Redmond, WA, company until today. The last version of Windows, Vista, debuted less than three years ago to mixed reviews. Windows 7 may be part of the attempt by Microsoft to overcome the difficulties of Vista. Those eager to try out the new system can test it before it launches and decide for themselves.