I suppose I can slightly understand skipping Zorin 13 going from Zorin 12.
Yet, looking at the Zorin OS lineage, it followed a set numerical pattern until Zorin OS 15. Was skipping Zorin 14 as well just to make the reason for skipping 13 less obvious?
Following 15 is now back to the numerical pattern again. Zorin OS 16.
Will we skip 17 and move to Zorin OS 18?
Or should we bump the next version up to Zorin OS 20?
Personally, I think we should use Roman Numerals, instead:
Zorin OS XVII