HP is reportedly working on an upcoming Windows 10 tablet that takes a lot of its features and looks from Microsoft's Surface Pro 3. A product page that was apparently posted and then pulled from HP's Swiss site (but still shows up in Google Cache) has the information about the unannounced tablet, the Spectre x2 12.
According to the page and images, the tablet will be made almost completely of aluminum and wil feature a built-in stainless steel kickstand in the back. It will have a 12-inch 1920x1080 display and, depending on the model, will have a Intel "Skylake" Core m5 or m7 processor inside. The amount of RAM will be between 4GB and 8GB with between 128GB or 256GB of storage. It will also have an 8MP rear camera and a 5MP front-facing camera, along with two USB Type-C ports.
The listing also shows a detachable hardware keyboard with backlighting. The listing shows a price of 1699 CHF, which is over 1550 euros. HP has yet to announce the Spectre x2 12, so it's possible that there could be some design or hardware changes before the company officially reveals it.