This is quite weird move and confusing (probably on purpose). This chip M5 is released in Macbook PRO but previous macbook pro had M4 Pro or M4 Max so their more like macbook air series to even like ipad pro series.

They say "M5 offers unified memory bandwidth of 153GB/s, providing a nearly 30 percent increase over M4" but my old Macbook M2 Max have 400GB/s