Now, with China's Yutu-2 Lunar rover, as part of their Chang'e 4 mission, another curiosity has been discovered, this time on the far side of the Moon (above).

Yutu-2 is in the fortunate position of being capable of getting closer to the feature. Assuming it will be directed there, it has been stated that it could take 2-3 months, but that could mean we will have an image showing this thing at twice the size in a month's time.

I suspect the thing will be explained away; perhaps it's just a large rock perched on the edge of the crater Yutu-2 is in, perhaps someone in the know will point out it's a lost probe/lander from a previous mission (such as Soviet or NASA - although that would be pretty cool to see).

The object has so far been verified by NASA's Lunar Reconnaissance Orbiter (LRO) (below).

Orbital view from NASA’s Lunar Reconnaissance Orbiter (LRO)
of the Chang’e 4 lander (in square) and the ‘mystery hut’ object (arrow)
on the edge of a crater about 260 feet (80 meters) away.

From the image above (click to enlarge), it is apparent to me that the object is smaller than the Yutu-2 rover itself (right), which is only 1.0 m tall and 1.5 m at its widest point.

More info and sources [link].