VIRUS units continue to multiply! Shown below is a representation of 52 units on the sky:
The grey squares with stars on them are looking at the sky (with more than 23,000 fiberoptic cables taking simultaneous spectra!), and the white squares are empty slots for future units.
The VIRUS units (grey squares) do not actually touch each other, but are shown doubled in size to fill in the gaps between them, graphically.