The snappers at CarPix have encountered a TT mule testing in the snowy north and unfortunately, it doesn't give much more away. The wheelbase has grown – notice the hood shutline is uneven with the front arch, and the arches are said to look wider. The exhaust was described as "more mature," but that could be down to numerous mule-related reasons.
There were hints that we'd see it at last year's Tokyo Auto Show, but obviously that didn't happen. Based on the car in these spy shots, it could be a while yet.