<A target="_blank" href="http://www.pcmag.com/article2/0,2817,2386447,00.asp?kc=PCRSS03069TX1K0001121&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ziffdavis%2Fpcmag%2Fbreakingnews+%28PCMag.com+Breaking+News%29">The date is official for general availability, Thursday, June 28, 2011.</A> Microsoft is claiming 100,000 customers already use the beta version.