Luna Display Turns a 27-inch iMac into a 5K Display

[nello]

Luna Display is also being discussed on this thread.

Using a 27-inch iMac as a display

It appears that my 2017 iMac is nearing the end of its supported life, so I am looking at a future replacement. Since my iMac is still fully functional, is there any way I could use it as a monitor for a new Mac mini?