Vista's successor now known as "7," due out within three years

Although Vista still seems fresh as a daisy, that hasn't stopped Microsoft from planning their next major OS release, and it looks like a part of the plan is changing the internal codename from Vienna to "7." The switch was disclosed at at a Microsoft sales training conference in Orlando this past week as part of the company's new "iterative" information-sharing plan, which aims to provide customers and partners with more and more info as part of a predictable release schedule. Microsoft also confirmed that 7 is scheduled to be in development for three years, which we kinda-sorta already knew. No word on when we might ever see Vista SP1, of course, but we bet all those customers and partners are still pretty psyched to know the new codename for a product that's three years out.