Design is exactly the same except P-08 is 20mm longer.
First, they made P-07.
Second, they made 5 changes, added 20mm and P-08 was born. (There is another, sixth change - new triggers).
Third, they like new P-08 so much, that they did the same 6 changes to P-07. (except 20mm addition).
Last September after test shooting in UB I looked at P-08 and asked: 'why you did not design P-07 like this one?'
They already worked on it.