At this point, the only thing keeping Microsoft in the tablet conversation are rumors of its Windows 8 or Windows Next, and lo and behold we've got another one to add to the pile. While we heard last week that Microsoft could release the beta of Windows 8 for tablets at PDC in September, "sources at Microsoft" have now told Business Insider, that the company is hoping to show a public "design demo" of the operating system's tablet UI as early as June. The timing is interesti
