It looks that way from the PDF.

But at the same time, the site list 16 Business class seats and 4 rows are coloured light blue for business class. That would make 4 passengers per row.

Comparing the CS1 seat map with the one for the Avro, they look the same, and in Avros, they definitely sell 4 per row (ABDF). So most likely, it will be the same on the CS1.