The last Chrome OS device to emerge from Google was the Pixelbook, a top-notch Chromebook which works both as a laptop and tablet.
And as you well know, that is 4K.
As of yet, no Chromebook has had a 4K screen: the Pixelbook's 12.3in display has a resolution of 2400x1600.
Previously there have been rumours of a 'secret 4K Chromebook' which many took as a joke. However, this discovery adds weight to the theory that Google will indeed launch a 4K Chrome OS device soon.
Whether this is a tablet or a 2-in-1 hybrid like the Pixelbook is yet to be confirmed, but other leaks and rumours suggest the new device will have a Kaby Lake chip, a keyboard and a trackpad.
When is the 4K Chromebook release date?
Right now, the device itself is based on only a couple of discoveries, but if it is indeed a real product, Google might well choose to announce it at its annual developer conference - I/O - which starts on 8 May.
When more rumours surface, we'll be sure to add them here.