Reports that Microsoft (MSFT) is working on an own-brand tablet with a 7-inch display have surfaced once again. Earlier this year, rumors stated that the Redmond, Washington-based company would launch an “Xbox Surface” gaming tablet with a 720p HD display, an ARM-based TI CPU and a 28-nanometer AMD graphics processor. The Verge on Tuesday says that it has confirmed the existence of such a device with multiple unnamed sources. Unlike its high-end Surface tablet, the gaming slate won’t run Windows 8 or Windows RT but rather a custom Windows kernel with an emphasis on gaming. The device is said to be closely guarded and is expected to debut before the next-generation Xbox gaming console.