This is nothing new. You can even use cygwin with KDE or GNOME to completely replace the actual windows desktop. This causes only a few problems, mostly with the windows control panel. (and one of the 2 has had problems with noroot mode [no root means Xserver does not run in a window])

As cygwin provides a full linux environment, the only new thing the screen shot shows is the use of Knoppix as a basis for a cygwin configuration.

But irt is still a most interesting screen shot.