Dell gave us a heads up back at IFA that it was planning on offering its high-end XPS 27 all-in-one with an optional touchscreen. Well, that day has come: the company just announced that it will begin accepting pre-orders today, with the touch-enabled models starting at $1,600. As a quick refresher, that 27-inch screen tops out a whopping 2,560 x 1,440 pixels, while the stand tilts to a near-flat angle of 60 degrees. If sixteen hundred bucks is more money than you were planning on spending, Dell will also offer the Inspiron One 23 with an optional touchscreen. At a fraction of the co
