I thought this was something Underworld did back during Dub, STITI, and BF where different formats had different covers.
For example, Beaucoup Fish,
The vinyl has a square shape on the cover...
The CD has a circle...
And the cassette is a rectangle...
Each a nod to the format.
There was also a special edition digisleeve CD version with a half circle...
If you look at Dubnobasswithmyheadman, there are also differences in the cover art depending on the format.
CD...
Vinyl...
Cassette...
I prefer the CD cover of STITI and BF